# Abstracts of Research on Manipulatives

Ainsa, T. (1999).
Success of using technology and manipulatives to introduce numerical
problem solving skills in monolingual/bilingual early childhood
classrooms. __Journal of Computers in Mathematics and Science
Teaching__, 18(4), 361-369. * *

This study tested the effectiveness of using manipulatives and
technology to teach numerical problem solving skills, including
counting, identifying shapes, matching colors and numbers, addition,
and subtraction. Children (ages 4-6) in five early childhood
classrooms were studied using M&M candies and Skittles (for
those allergic to chocolate) as manipulatives. Of the 101 students,
41 were monolingual and 60 were bilingual. The candy was used
as a hands-on tool to supplement the *M&M Counting Book*
(McGrath, 1995), which was used as part of the mathematics curriculum.
The software used in this study included: *KidsMath* (Great
Wave Software), *Stickybear's Math Town *(Optimum Resources,
Inc.), and *Stickybear Shapes* (Optimum Resources, Inc.).

Students were given M&M candies (or Skittles) and a counting
sheet. The teacher read the *M&M Counting Book *and
made observations as students performed the activities presented
in the book. Students counted aloud, displayed answers on the
sheets, and made shapes using the candy. After completing the
activities, students used the computers to practice the concepts
covered in the book. Teachers documented data while observing
students. In this study, pre- and posttests were not administered.
Success was measured through frequency of correct student responses,
observations, and teacher report. The frequency of successful
responses indicates that the combination of manipulatives and
technology leads to higher student achievement, regardless of
linguistic background.

Baker, J. D., & Beisel, R. W. (2001). An
experiment in three approaches to teaching average to elementary
school children. *School Science and Mathematics, 101*(1),
23-31.

__Summary:__ The researchers studied 22 students in grades
4-6, in three multiage groups. The students were attending a mandatory
summer session at the Indiana University of Pennsylvania lab school.
Three instruction styles were used to teach the concept of average.
The three styles were traditional lecture, concrete/hands-on activities,
and visual/spreadsheet activities. Using various methods of comparing
pre- and post-test data, and interviews, the researchers concluded
that there are some advantages to the visual/spreadsheet approach.

__Official Abstract:__ The types of experiences children should
encounter to best understand average were investigated in this
study. Using a traditional approach with problem solving, a concrete
approach with manipulatives, or a visual approach with computer
spreadsheets, similar lessons on the arithmetic mean were taught
to 22 children in grades 4-6, in three multiage groups. Differences
among pretest, posttest, and interview performances suggest some
advantage in the use of a visual instructional style. Continued
gains in performance were found after 4 months without further
instruction. An algorithmic-like definition of average corresponded
to better long-term performance than less precise definitions.
Collaborative deliberations resulted in positive implications
for the researchers' teaching.

Balka, D. S. (1983). *Mathematics manipulatives in a pre-vocational
program: T**eacher inservice and classroom research.*
(ERIC Document No. ED237739). Washington, DC: U.S. Department
of Education.

This article presents the results of action research conducted by four high school teachers who volunteered for this study.

__Participants__: The teachers collecting data chose a total
of 42 students (Sowell, 2) to participate in the study. It was
noted that the entire class participated in the activities. Additionally,
all of the students were high school level and classified as "mildly
mentally handicapped" (Sowell, 10).

__Manipulatives:__ "Try-A-Tile cards", "Math Match cards",
"Tangle Tables", "Pathway Activities" (Sowell, 4) tangrams, and
polyhedra dice were used in this study.

__Math concepts taught: __ Manipulatives were used daily (10-15
min.) to reinforce concepts of place value and basic computational
skills.

__Methodology__: Quantitative methods were used as a pre-test,
post-test design with the data from each teacher analyzed separately.

__Results__: Increased computational achievement in whole
numbers was reported in three of the four data sets. The analysis
on the fourth data set showed not gain or loss in achievement.
Overall, the data produced significant results (p<.05) in division
and total gains on three of the data sets and on multiplication
in one data set. The researcher suggested that although some results
are considered significant, they "do not lend support to the notion
that the use of mathematics manipulatives with slow learners can
improve computational skills." (Sowell, 8).

Ball, S. (1988). Computers, concrete materials and teaching fractions. School Science and Mathematics, 88, 470-475.

Ball (1988) found that fourth-grade students using both virtual and physical manipulatives scored significantly higher on conceptual understanding of fractions than students using no manipulatives.

Barclay, Jennifer. (1992). __A study of a manipulative approach
to teaching linear equations to sixth grade students__. Unpublished
master's thesis, Texas Woman's University, Denton, TX.

The seven-week study conducted by sixth grade teacher, Jennifer Barclay investigated the effectiveness of using the algebra manipulative, Hands-on-Equations to teach the concept of solving linear equations. Ninety-two of the students were randomly divided amongst 4 different heterogeneously grouped sixth grade classes. The remaining 31 students were enrolled in a gifted and talented class. The ages of the students ranged from 11 to 13 years.

All groups received a pretest; approximately one week of instruction with the manipulative; a posttest; three-week retention test; and a six-week retention test. The results from the test assessed the level of concept mastery and retention. The range of scores for the tests follow: pretest 23.66% to 35.5%, posttest 93.6 to 96.8%, 3week retention 87.8 — 96.8%, and 6 week retention 92.1 — 98.3%.

The results of the study reveal that students appear to have successfully mastered the concepts of solving linear equations taught in level one of this program. Recommendations for future studies suggest using three different methods of teaching solving linear equations: pictorially, with manipulatives, and the traditional symbolic approach.

Battista, M.T. (1999). Fifth graders' enumeration of cubes
in 3D arrays: conceptual progress in an inquiry-based classroom.
__Journal of Research in Mathematics Education, 40 __(4), 417-448.

This is a case study that involves observing and interviewing three pairs of fifth graders over a 4-week teacher-directed instructional unit where students are involved in constructing an understanding of volume of rectangular solids. The purpose of this study was to examine the cognitive connections that developed and how those connections change in an inquiry-based problem-centered based classroom. Participants in the study used cubes as a physical manipulative in an instructional task designed allow students to develop and refine their mental models about finding the volume of a rectangular solid through enumeration of the cubes required to fill the box. This study was shaped by the premise that change occurs as an accommodation to a perturbation and that perturbations arise through interactions with the physical world and in communications with other people.

The task or problem is, given a picture of a net for a box on grid paper, the picture of a box built from grid paper, or the verbal description of a box predict how many cubes it would take to fill the box. Participants worked collaboratively in pairs to build the box from the given information and check their prediction about how many cubes it would take to fill the box with the actual cubes. The discrepancy between the participants' prediction and the actual number of cubes required to fill the box provided an opportunity for the pairs to reflect on their thinking or enumeration schemes and to make adjustments in their method. This process was carried out over six iterations. An interviewer sat with each case-study pair to monitor the evolution of their thinking through observation the pairs and by asking them clarifying questions. Pre and post-treatment interviews of the case-study pairs as well as transcriptions of the video-tapings of each observation session were also used. The findings from this study are generalizable based on the comparisons of the findings in the three case-study pairs to the similar findings based on the observations and notes made by the teacher and another researcher on other members of class.

Immediately after the treatment the only one student was unable to use a mental model to enumerate the number of blocks it would take to fill a box. On a post-interview four months after the treatment all of the participants except the one who did not attain a good mental model during the treatment were still able to use their mental model to determine the number of cubes required to fill a box.

From the implementation of the study and the results of the treatment on the students several conclusions were drawn. The first is that in a constructivist classroom students' construct, refine and revise their conjectures to accommodate conflicts that arise from discrepancies carrying out a task or through communication. However, students' theory building is incremental and there is a need for multiple and varied opportunities for students to build an understanding of difficult concepts and the process needs to be mediated by teachers and by instructional material. The researcher expressed his belief that the treatment would not have been so effective if students had not have been able to self-check their predictions the manipulative. I believe the most powerful statement from the study and its' implications for preservice and inservice teacher education is that, "Only by thoroughly understanding the pedagogical approach and the usual paths students take in learning particular mathematical ideas---including stumbling blocks and learning plateaus---can teachers know when to intervene."

Battista, M.T., Clements, D.H., Arnoff, J.Battista, K., &
Van Auken Borrow, C. (1998). Students' spatial structuring of
2D arrays of squares. __Journal for Research in Mathematics
Education, 29 __(5), 503-532.

This is a case study carried out over one year that involves interviewing twelve second graders, a third grader, and a fourth grader. The purpose of this study was to examine in detail how students structured and enumerated 2D rectangular arrays of squares in order to gain a better understanding of the mental processes being used. In this study spatial structuring is defined as the "mental operation of constructing an organization or form for an object or set of objects." In a prior study, Battista and Clements found that before students could count or enumerate the number of blocks accurately in a 3D rectangular solid the student needed a mental model or spatial structuring in order to organize the information for counting. In the earlier study the most effective spatial structuring model was found to be when a student held a mental model which allowed them to see the rows and columns as well as the layers that made up the solid. In the results of the earlier study it was noted that students often had difficulty in their mental model of a single layer. Spatial structuring with a 2D rectangular array is important in the development of the concepts of area and multiplicative thinking and led this research team to further study.

Pre-study interviews were carried out with students to establish the protocol for interviewing students and to establish distinctions in the way they went about the task.Using this information the research team developed descriptions for the three levels of sophistication in student's structuring of 2D arrays as well as descriptions of student's thinking during the activity. All students were interviewed at the beginning of the year and the end of the year. Three times during the year 4 of the original group of twelve were interviewed again. Particular attention was given to students as they transition from one level to another. Students received no instruction on counting squares in a rectangular array during the year that while study was being conducted. The interviews were videotaped, transcribed, and analyzed. The task used in the interview was made up of seventeen different rectangular shapes. Each shape was scored with squares in a different way and two of the seventeen were blank on the inside. Students were asked to predict how many squares it would take to cover the rectangle and then they were asked to draw in the squares then predict again how many squares it would take. Participants were given tiles with which to cover the rectangles.

One conclusion drawn from the study was that students progressed to a more sophisticated level of when they experienced perturbations or difficulties in predicting the correct number of squares required to cover the square. This study informs curriculum and instructional designers that the mental model for the row-by-column matrix arrangement is not in the array itself, students must construct a mental model for this arrangement. Therefore, before an array can be used as a tool to develop concepts such as area and multiplication we must ensure that student's have attained an understanding of row-by-column structure of the array.

Belcastro, F. (1993). Teaching addition and subtraction of whole
numbers to blind students: a comparison of two methods. __Focus
on Learning Problems in Mathematics, 15__ (1), 14-22.

Belcastro conducted an experimental study of five blind first-grade students. The students were split into a group of three and a group of two. The larger group used Belcastro rods to study addition and subtraction of whole numbers, while the smaller group used buttons and other traditional materials. The Belcastro rods are similar to Cuisenaire rods in size and shape, but replace the colors of the Cuisenaire rods with specific textural clues such as longitudinal grooves, horizontal grooves, and holes. Rods of base length 2, 4, and 8 have longitudinal grooves. Horizontal grooves are found on rods of base length 3, 6, and 9. Rods that represent 5 and 10 have holes drilled through them. Rods for 1 and 7 have no markings but are distinguishable because of the large difference in their lengths. The Belcastro rods were employed in a way similar to the way Cuisenaire rods are employed to teach whole number addition and subtraction.

In the fall of 1990, the five students were given a verbal pretest. The next day, intervention began in the form of instruction utilizing either the Belcastro rods or traditional materials. Cuisenaire rods were not used as they had been previously found to fail with blind students. Once the instruction was completed, the children were administered a posttest. All instruction and testing were concluded by January 1991.

All students missed all the questions on the pretest so only the posttest was considered. Students using the Belcastro rods did better. Their mean score on the 10-question test was 9.67 while the traditional group's mean was 7.5.

The author concedes that the sample size was too small to make any generalizations to all blind students. He suggests, however, that they are sufficiently promising to warrant additional testing of the rods with more blind students as well as sighted students. In addition to the small sample size, I wondered about the author's bias, given that he was the inventor of the manipulative that he was testing.

Berlin, D., & White, A. (1986). Computer simulations and the transition from concrete manipulation of objects to abstract thinking in elementary school mathematics. School Science and Mathematics, 86, 468-479.

Berlin and White (1986) found no statistically significant differences between second- and third- grade students using physical manipulatives, virtual manipulatives, and both treatments on measures of spatial sense and patterning.

Bishop, Joyce Wolfer. (1997, March*). Understanding of Mathematical
Patterns and Their Symbolic Representations*. Paper presented
at the Annual Meeting of the American Educational Research Association,
Chicago, IL. (ERIC Document Reproduction Service No. ED 410 107)

This study explores seventh- and eighth-grade students' thinking about mathematical patterns. Interviews were conducted in which students solved problems about sequential perimeter and area problems modeled with pattern blocks and tiles, generalized the relationships related to the patterns and represented the relationships symbolically, identified other valid symbolic expressions of the pattern, and encountered equation-evoking situations. Research questions pertained to the strategies middle school students use to reason when solving pattern problems, symbolic representations the students develop, the students' interpretations of equation-evoking situations. The results of this study support the use of mathematical patterns to promote algebraic reasoning and provide descriptions of middle school students' reasoning as they engage in solving a specific type of pattern problem. Findings also suggest that experience exploring the relationships in sequential perimeter and area patterns may help students develop an appreciation for the meaning of expression. Contains 16 references.

Video and audio taping, and examples of student work were collected and coded for strategies, accuracy of outcomes, and implications for student understanding. Students used 5 distinct strategies that were not modeled for them; 3 main strategies for identifying alternative symbolic expressions; and 8 different strategies for equation-evoking situations.

Three clusters of students were identified: Verbal and Single-Operational Expressions and Equations, Transition from Verbal and Single-Operational to Symbolic Expressions, and Equations, and Symbolic Expressions and Equations.

Chassapis, Dimitris. (1998-1999). __The Mediation
of Tools in the Development of Formal Mathematical Concepts: The
Compass and the Circle as an Example__. Educational Studies
in Mathematics. 37(3), 275-93.

This study focuses on the process by which children develop a formal mathematical concept of the circle by using various instruments to draw circles within the context of a goal-directed drawing task. Particular attention was given to the transition from using tracers and templates to using a compass for drawing circles and to the extent to which the use of different drawing instruments may contribute to the formation of a formally defined mathematical concept of the circle. The critical difference considered in the study is that the compass, in contrast to circle-drawing tracers or templates, induces by its ph7sical structure and its functional use the generative features of formal mathematical concepts of the circle, that is, the centre and the radius. Analysis of the empirical data indicates that the use of the compass in circle drawing structures the circle-drawing operation in a radically different fashion than circle tracers and templates, and brings into play an action-bound practical thinking. Such thinking has an overall positive influence on the construction of analytical concepts by children that are analogous to the formally defined mathematical concepts of the circle.

The use of circle tracers and templates, providing regulation and control of the human-hand movement in doing the same practical actions as those a freehand circle drawing, (thus not qualitatively transforming the circle-drawing operation), seems to influence although not to radically change the children's spontaneous concepts of the circle. On the other hand, the use of the compass, which structures the circle-drawing operation in a radically different fashion than circle tracers and templates, creates the preconditions which may give rise to concepts constructed in the realm of action-bound practical thinking, because it is a functional meaning of circle-drawing that emerges when using a compass.

Chattin-McNichols, J. (1992). *Montessori Programs in Public
School. *(Report No. EDO-PS-92-7). Champaign, IL: University
of Illinois at Urbana-Champaign Children's Research Center. (ERIC
Document Reproduction Service No. 348165).

Montessori was one of the pioneers of manipulative use. The Montessori program relies on student participation in different activities. Teacher presentation is minimal. Students "create" their own learning. Students work individually or in small groups for three to four hours each day. Students cooperate rather than compete with each other. Montessori programs show increased achievement test data. Regrettably, most children do not have access to Montessori education due to lack of money, class spaces, teacher training, and program availability. Traditional programs that use manipulatives can take the general Montessori philosophy and cater it to meet the needs of their curricula and classroom restraints. Manipulatives, classroom interactions, and student-centered learning combine to create a beneficial learning environment for children both socially and academically.

Chester, J., Davis, J., & Reglin, G. (1991). *Math manipulatives
use and math achievement of third-grade students*. Charlotte,
North Carolina: University of North Carolina at Charlotte.

__Summary:__ The researchers studied two third-grade classes
in western Iredell County, North Carolina. Each class contained
26 students. Manipulatives (types were not specified) were used
with the experimental group to teach a geometry unit. The same
unit was taught to a control group using only the text and traditional
lecture-style instruction. The study was conducted over a period
of two weeks. Using analysis of covariance, the researchers concluded
that the experimental group scored significantly higher on the
posttest than the control group.

__Official Abstract:__ Recent reports indicate that although
17-year-old high school students know some basic addition and
subtraction facts, few of the students are capable of solving
multi-step mathematics problems. A non-equivalent pretest-posttest
control group design study examined the effects of a teaching
method emphasizing manipulative use on the mathematics achievement
of third-grade students. Two third-grade classes with 26 students
each were selected to participate in the study. Reported demographic
data indicated that the control group class from western Iredell
County was composed of 10 (38%) white male students, 3 (12%) black
female students, and 13 (50%) white male students, and that the
experimental group class from southern Iredell County was composed
of 10 (38%) white male students and 16 (62%) white female students.
A 2-week geometry unit from the Silver Burdett textbook was administered
in both classes. The experimental group teacher used mathematics
manipulatives to teach the concepts presented in the unit, and
the control group teacher used only drawings and diagrams to teach
concepts. Analysis of covariance revealed that the experimental
group using mathematics manipulatives scored significantly higher
in mathematics achievement on the posttest scores than the control
group. Further study is recommended to see if this finding is
generalizable beyond the two classes studied or the subject of
geometry. The pretest and the posttest are attached.

Cobb, P. (1995). Cultural tools and mathematical learning: a
case study. __Journal for Research in Mathematics Education,
26__ (4), 362-385.

The investigator did a case study of four pairs of second graders who were beginning to learn about place value, specifically tens and ones. The researcher was interested in the transition that children make from counting by ones to counting by tens and ones. The manipulative used was the hundreds board, and multi-link cubes in bars of ten were also available to the children. Videotapes were made of all math lessons in the entire class for one whole year. They were also made of the eight children in the study over a ten-week period during that year. In the classroom, typically there was small group problem-solving followed by whole class discussion. One camera was used for the latter, while two were focused on the small group work.

It was found that children's use of the hundreds board did not support their transition from counting by ones to counting by tens and ones. However, the hundreds board did appear to support their ability to reflect on their mathematical activity once they had acquired the concept. The investigator observed that there seemed to be an all-or-nothing quality to this ability, as if the children made a sort of quantum leap to it.

The author suggests that the hundreds board does not facilitate the acquisition of the concept of counting by tens and ones, because of its specific prestructure. He suggests that an empty number line might be better, especially if children are encouraged to discuss their solutions to well-selected tasks that facilitate rich imagery.

The author poses an interesting analogy between architecture and math. An architect of a building organizes our experience, physical and otherwise, within the building. The architecture of our math notational system, including the manipulatives that we choose to use to convey it, organize our math experience, both constraining it and supporting it in ways that we are often unaware of.

The author also used the investigation to look for evidence to support learning theories. Specifically, he contrasted the constructivist point of view emblemized in Piaget with sociocultural theory emblemized in Vygotsky. While constructivists emphasize individual diversity, the sociocultural theorists emphasize homogeneity within the cultural group. Piaget focuses on conceptual reorganization while Vygotsky would emphasize the need to enculturate children into established math practices. The sociocultural theorists would propose that the tools we pick drive the concepts that we teach, while the constructivists would say that concept construction precedes symbols. The author, though a constructivist, found evidence in the study that the two theories are complementary. My own interpretation of his finding could be stated thus: Act locally to link into the global mathematics community.

Conroy, L. M., Tracy, D. M., & Eckart, J. A. (1994). The
differential effects of Miras and mirrors on eighth-grade females'
and males' ability to learn principles of plane mirrors. *School
Science and Mathematics, 94*(8), 395-400.

__Summary:__ The researchers studied 101 eighth-grade physical
science students at a Midwestern, suburban, upper-middle income,
junior high school. There were five classes total. To teach the
five principles of plane mirrors, two classrooms used Miras only,
two classrooms used mirrors only, and two classrooms used Miras
and mirrors. The same unit was taught to all five classrooms.
The study was conducted over a period of 18 weeks. Using analysis
of variance methods, the researchers concluded that both male
and female students benefited from instruction using both Miras
and mirrors. Other findings were that male and female ability
to learn these concepts may be differentially effected by the
manipulatives used.

__Official Abstract:__ Study of (n=101) eighth-grade physical
science students learning principles of plan mirrors using mirrors
and Miras found that males scored significantly higher than females
on a chapter test, but that all students benefited when both Miras
and mirrors were used throughout the learning process.

Cotter, J. A. (2000). Using language and visualization to teach
place value. *Teaching Children Mathematics, 7*(2), 108-114.

__Summary:__ The researcher studied 32 first-grade students
at a rural Minnesota elementary school during the 1994-95 school
year. There were two classes of 16 students each. To teach place
value, the experimental classroom used the "Asian" method,
using language patterns and visualization with abacuses and base-10
blocks, while the control classroom used a traditional approach.
Using interviews with the two teachers and the students, the researcher
concluded that the students taught in the "Asian" method
exhibited a better understanding of place value.

Dairy, L. (1969). *Does the use of cuisenaire
rods in kindergarten, first and second grades upgrade arithmetic
achievement *(Report No. PS002132)? Colorado Springs, CO:
Department of Research and Special Studies. (ERIC Document Reproduction
Service No. ED032128)

A three-year study was conducted on students in kindergarten, first grade, and second grade to determine the usefulness of incorporating Cuisenaire rods into the mathematics program. The study comprised control groups from Columbia School and experimental groups from Whittier, both schools comparable in demographics. Number of participants varied due to enrollment changes over the three-year period. In the experimental groups, kindergartners received individual instruction on the use of the rods, first grade students completed teacher-created worksheets based on the use of rods in conjunction with the Laidlaw workbooks, and second grade students performed tasks directly from the workbooks using Cuisenaire rods. Use of Cuisenaire rods was ongoing throughout the three-year period, except during the geometry and measurement unit when geoboards were utilized and when money was used to introduce money concepts.

At the end of each year, Test 5 (Numbers) of the Metropolitan Readiness Test was administered to both kindergarten groups. First graders took the same test in the fall of the last two years of the study. Both first and second grade students completed the Metropolitan Upper Primary Test (Arithmetic) each spring. Consistently, all three experimental groups (K-2 at Whittier) performed at a higher level than the control groups (Columbia). Using end-of-year norms for the final year's testing, the scores were all above the 80%ile, indicating that the utilization of Cuisenaire rods does enhance mathematical achievement of primary students.

Davis, B. and Shade, D. (1994). *Integrate, Don't Isolate!—Computers
in the Early Childhood Curriculum. *(Report No. EDO-PS-97-14).
Champaign, IL: Children's Research Center. (ERIC Document Reproduction
Service No. ED 376991).

This study looks at the effectiveness of integrating curricula in computer labs and with computers in the classroom.

Advances in technology make integrated computer use in the classroom possible. Unfortunately, computers are mostly used as an isolated tool for specific skill repetition and pre-made "quests". Children need to take charge of their learning while using computers as a resource tool, organizational instrument, and presentation device. When computers are used as a drill and practice tool, they negate the positive attributes computers can provide.

If computers are kept in a computer lab, it further isolates the impact of technology on education. Children may only go to the lab for one hour once a week. Computers become a separate, disjointed part of education.

Ernest, Patricia S. (1994, Nov). __Evaluation
of the effectiveness and implementation of a Math manipulatives
project__. Paper presented at the Annual Meeting of the Mid-south
Educational Research Association, Nashville, TN. Available:
Eric Document 391 675

The study consisted of 40 high school teachers from 26 schools. The teaching experience ranged from 1-42 years with a mean of 17.5 years. The teachers taught the following courses: Math 7, Math 8, General Math, Pre-Algebra, Consumer Math, Technical Math, Algebra I, Algebra II, Geometry, Trigonometry, and Pre-Calculus. The teachers attended a weeklong intensive training workshop in the use of manipulatives, implemented the teaching strategies discussed during the workshop in their classroom instruction during the following year, then attended a follow up session to discuss strategies and problems identified during the implementation phase of the study.

The manipulative utilized for this study was the Mathematics Manipulatives Kit consisting of dice, polyhedra dice, spinners, Pattern Blocks, circular counters, color cubes, attribute blocks, geoboards, fraction bars, Algebra Tiles, protractors, compasses, geometric models, graphing calculators.

Data was gathered to evaluate the weeklong teacher training workshop and the implementation of manipulatives in classroom instruction. On-site observations were conducted to record utilization by course and manipulative, student participation, student attitudes toward the manipulatives, and interaction with the content. Evaluation of the workshop revealed that the teachers found the quality of instruction to be excellent to very good. Evaluation of the Math Manipulative Observation lessons revealed that students enjoyed using the manipulatives and that "on task" involvement was very high. Students exhibited confidence, eagerness, and a desire for other experiences. They often employed discovery and problem solving strategies beyond the assignment. Teachers reported that students enjoyed and were more interested in assignments when manipulatives were used. Teachers also reported that more planning time and class time was needed for lessons involving manipulatives.

Flanagan, Robin. (1996, April). *Unintended
Results of Using Instructional Media: A Study of Second- and Third-Graders*.
Paper presented at the Annual Meeting of the American Education
Research Association, New York, NY. (ERIC Document Reproduction
Service No. ED 394 514)

Much of the research on classroom use of educational media has been hampered by difficulties in isolation a single element of the medium—television programming, for instance—that influences behavior in a reliable way. Still, each medium facilitates a particular type of learning environment, and the collective characteristics of those environments must be examined for possible effects. The learner in the television-based learning is often passive, and some experts would suggest that such learners exhibit learned helplessness. This refers to behavior observed in situations where a person's actions have no effect on outcomes. This report describes a study which updates the author's previous work in this area. This study tries to replicate an earlier finding that 15 minutes of a mediated learning experience, like a math video, would more often lead to less persistence or propensity for challenge, than a more active learning environment would. The study focused on 90 second- and third-graders in four classrooms from three different schools. Students in two of the classrooms were from a small city in upstate New York. One of these classes was bilingual. Two of the classrooms were from suburban New York. Using tangram puzzles of varying difficulty, the researcher found that students who viewed a video gave up on hard puzzles and opted for easier ones sooner than students who has previously been engaged in more active treatments of the same topic. Five figures and three tables illustrate the results.

- second- and third-grade students
- 90
- tangrams
- problem solving
- five sessions for 40 minutes
- 2x2 matrix: video or non-mediated activity as one dimension of the matrix and subject matter as the other dimension, either scale models or mental arithmetic.

The students answered a questionnaire following the initial activity. (Very hard- Very easy; Very fun- Very Boring). Students watching 15 minutes of television would be less persistent in working on hard math puzzles than they would be following 15 minutes of an activity on the same topic.

Garrity, C. (1998). Does the Use of Hands-On-Learning, with Manipulatives, Improve the Test Scores of Secondary Education Geometry Students? An Action Research Project Submitted at Saint Xavier University (Chicago, Illinois). Available ERIC Document ED 422 179

This study documented the difficulty of high school students to visualize and understand geometry problems and sought to improve this ability by implementing a constructivist approach which included manipulatives, cooperative learning, and real-life problem solving. The study was conducted with 47 sophomore students enrolled in two high school geometry classes. One group was considered the control group and was initially taught using the traditional teacher lecture method and the second group was the experiential group which was taught using manipulatives, cooperative learning groups, and real-life problem solving situations. Research methods included students and parent surveys, teacher created quizzes and tests, teacher observations, and interviews. Specific concepts and manipulatives used to teach the classes were listed. They included: geoboards (points, lines, segments), graphing calculators (angles), plastic straws (lines, transversals, polygons), and toothpicks (diagonals). The researcher concluded after the initial part of the study that the scores of the experiential group were higher than those of the control group, thus, the traditional teaching method is less effective than using manipulatives, cooperative groups, and real-life examples. The researcher also noted students favored group learning and real-life problems and exhibited positive changes in attitude and enthusiasm.

Gibson, H. L., Brewer, L. K., Magnier, J. M., McDonald, J. A.,
& Van Strat, G.A. (1999, April). *The impact of an innovative
user-friendly mathematics program on preservice teachers' attitudes
toward mathematics.* Paper presented at the Annual Meeting
of the American Educational Research Association, Montreal, Quebec,
Canada.

*The Impact of an Innovative User-Friendly Mathematics Program
on Preservice Teachers' Attitudes Toward Mathematics* is a
study that was a collaborative project between the University
of Massachusetts at Amherst, and Springfield Community Technical
College. It was conducted at the University of Massachusetts School
of Education in 1998 by researchers Dr. Helen L. Gibson, Laura
K. Brewer, Jean-Marie Magnier, James A. McDonald, and Dr. Georgena
A. Van Strat. The primary goal of this study was to determine
if a constructivist approach to learning of preservice teachers
in their college mathematics program would improve their attitudes
toward mathematics. The researchers wanted to see how they could
enhance preservice teachers' attitudes towards math as the progressed
in the college level mathematics course sequence. This document
promotes instructional strategies that use manipulatives and hands-on
learning experiences in order to explore real-life situations
that relate to students' everyday life.

__Participants__: The participants of this study were 52 paraeducators
enrolled in the UPDATE program.

__Manipulatives:__ A variety of manipulatives were used in
this study. The examples that were given were Cuisenaire rods
and pattern blocks (Gibson et. al, 14).

__Math concepts taught: __ Algebra

__Methodology__: Between June 1998 and December 1998, two
questionnaires were administered. Students completed the Revised
Teacher Attitudinal Survey (RTAS) and Instructional Strategies
Survey. The revised survey contained 44 statements to which the
students responded on a scale of 1-5 with 1 correlating to strongly
agree and 5 — strongly disagree. The 44 items were used to compute
four subcategories: "Views about Mathematics, Being Good at Mathematics,
Learning Mathematics, and Teaching Mathematics" (Gibson et. al,
9) that were intended to measure attitudes about mathematics.
The two surveys provided both qualitative and quantitative information
about the program. The RTAS was administered twice per course.
The Instructional Strategies survey was only administered once
at the end of the course.

__Results:__ The results indicated that the attitudes toward
mathematics did not change during any of the three courses that
were taken. The qualitative data indicated that the methods used
helped them more than a more traditional approach would have with
the added benefit was that the subjects now understood the use
of manipulatives.

Gresham, G., Sloan, T., & Vinson, B. (1997). Reducing Mathematics Anxiety in Fourth Grade "At-Risk" Students. Available ERIC Document ED 417 931.

This paper examined whether fourth grade mathematics anxiety could be decreased by employing mathematical instructional strategies based on National Council of Teachers of Mathematics Standards (NCTM). The study was conducted for six months with 17 fourth grade students and one teacher. Pre- and posttest anxiety scales were given to the students and a journal of instructional strategies was kept by the teacher. Instructional practices included cooperative learning, real-life problem solving, manipulatives, calculators, and computers. Specific class activities which included numeration and number sense, geometry and measurement, as well as computation and estimation are listed. Also included are manipulatives that were used during these activities such as geoboards, rulers, pattern blocks, and computers. The researcher concludes that students anxiety is decreased when instructional methods are implemented based on the NCTM Standards.

Groves, Susie. (1994, April). *Calculators: A Learning Environment
to Promote Number Sense*. Paper presented at the Annual Meeting
of the American Educational Research Association, New Orleans,
LA. (ERIC Document Reproduction Service No. ED 373 969)

The Calculators in Primary Mathematics Project in Australia was
a long-term investigation into the effects of the introduction
of calculators on the learning and teaching of primary mathematics.
The Australian project commenced with children who were in kindergarten
and grade 1 in 1990, moving up through the schools to grade 4
level by 1993. Children were given their own calculators to use
when they wished, while teachers were provided with some systematic
professional support. Over 60 teachers and 1,000 children participated
in the project. This paper describes some critical number sense
and reports on the results of interviews with 4^{th}-grade
children (n=58), approximately half of whom had long-term experience
with calculators. Children with long-term experience with calculators
performed better on the 12 mental computation interview items
overall, the 24 number knowledge items overall, and the 3 estimation
items taken individually. Overall, their performance was better
on 34 of the 39 items, with the greatest differences in performance
in mental computation generally occurring on the most difficult
items. Their pattern of use of standard algorithms, left-right
methods, and invented methods for mental computation items did
not vary greatly from that of the non-calculator children.

A written test, a test of calculator use and two different interviews were used. The first interview focused on different aspects of children's understanding of the number system, together with their choice of calculating device for various computational tasks and their solutions to "real world" problems based on division and multiplication. The second interview, which focused on number sense, was designed to complement the two tests and the first interview.

This paper and other (Groves, 1993a; submitted) show that children with long-term experience of calculators performed better than children without such experience on a range of computation and estimation tasks and some "real world" problems; exhibited better knowledge of number, particularly place value, decimals and negative numbers; made more appropriate choices of calculating device; and were better able to interpret their answers when using calculators, especially where knowledge of decimal notation or large numbers was required.

Hartshorn, R. and Boren, S. (1990). *Experiential
Learning of Mathematics: Using Manipulatives*. (Report No.
EDO-RC-90-5. ) Charleston, WV: Appalachia Educational Laboratory.
(ERIC Document Reproduction Service No. ED 321967).

This study is a compilation of results from previous statewide studies on the use of manipulatives in the classroom. Using data from surveys, Hartshorn and Boren found: Primary teachers generally accept the use of manipulatives Manipulatives are useful in the transition from concrete to abstract when taught in steps (semi-concrete, semi-abstract) Experienced teachers use manipulatives less than inexperienced teachers Teaching with manipulatives is effective only when the proper manipulative and activity is used Long-term use of manipulatives is more effective than short term use. Teachers' training influences the effectiveness of manipulatives Manipulatives are used infrequently at the secondary level even though many students need ideas introduced at the concrete level.

Hatfield, M. M. (1994). Use of Manipulative Devices: Elementary
School Cooperating Teachers Self-Report. __School Science of
Mathematics, 94,__ 303-309.

The article discusses the use of manipulatives in the elementary setting (K-6). 87 teachers were obtained for the research based on a survey that was mailed to 106 (K-6) teachers with 5 or more years in teaching. Those who responded to the survey were used in the study. This quantitative study shows the familiarity, availability, and use of eleven different manipulatives. The manipulatives used in this study were: pattern blocks, cuisenaire rods, geoboards, flexi-counters*, base 10 blocks, ropygrams* number/math balance, bundleable materials, tangrams, fraction bars, and attribute blocks. Note: those manipulatives marked with an * are not manipulatives but were used to determine response bias. 23.8% of those that responded said they were familiar with the flexi-counters and 1.2% said they were familiar with the ropygrams but that neither of the manipulatives were available.

The results of the study show that there is a decline at the intermediate grades (4-6) in terms of use of manipulatives. It further shows the need for universities to have more say as to where and with whom their pre-service teachers will conduct their experience.

Haughland, S. (2000). *Computers and Young Children*.
(Report No. EDO-PS-00-4). Champaign, IL: University of Illinois.
(ERIC Document Reproduction Service No. ED 438926).

"Computers have an impact on children when the computer provides concrete experiences, children have free access and control the learning experience, children and teachers learn together, teachers encourage peer tutoring, and teachers use computers to teach powerful ideas."

Although theory suggests a constructivist philosophy for children's computer use, most teachers use technology in traditional ways (basic skills and instructional games). When computers are used effectively, children have significantly greater developmental gains than children without computer use. Computer use enhances children's self-concept. Young children demonstrate increased levels of spoken communication and cooperation when working with a group and discussing their experiences while using the computer. Teachers with proper computer training (defined by practical experience, workshops, models and mentors, and supervisory follow-up) effectively integrate computers into their lessons when provided with adequate classroom resources.

Johnson-Gentile, K., Clements, D.H., & Battista,
M.T. (1994). Effects of computer and noncomputer environments
on students' conceptualizations of geometric motions. __Journal
Educational Computing Research, 11__ (2), 121-140.

This is a quantitative study that included interviews, which
involved 223 fifth and sixth grade students from 9 different teacher's
classrooms during the spring semester. The teachers were veteran
teachers in both urban and suburban settings. Participants were
using either Miras or the Logo MIRROR program to identify lines
of symmetry and paper or acetate sheets or the *Logo Geometry*
MOTIONS microworld to determine congruence, slides, flips and
turns. The purposes of this study examine students' conceptualization
of geometric motions and the effects of presenting the curriculum
via a computer with computer-based manipulatives or via paper
and pencil with hand held manipulatives. Possible impact caused
by gender differences and students' levels of thinking, based
on the van Hiele taxonomy, in the domain of geometric motions
were also investigated.

Two fifth grade classes and one-sixth grade class were assigned
to one of three treatment groups for an eight-day motions unit.
The LOGO group received all of their instruction using the Motions
strand of the *Logo Geometry* curriculum, the non-logo group
received instruction in the identical curriculum using noncomputer
manipulatives rather than the Logo tasks. A third nontreatment
group participated in the regular mathematics program
including a two-day textbook lesson on symmetry. A pretest of
general achievement in geometry was administered to all students.
Immediately upon completion of the unit a posttest on motion geometry
was administered to all students and it was readministered one
month later. Two boys and two girls were randomly selected from
each classroom for an individual thirty-minute structured interview.

An ANOVA on the pretest showed not significant differences but the ANOVA on the posttest and delayed posttest showed a significant treatment effect. Both the Logo and nonLogo posttest scores were higher than the control group. The immediate posttest did not show a significant difference in the Logo and nonLogo group, however the delayed posttest scores were significantly higher for the Logo group.

Karp, K. (1990). *Manipulative materials in
the primary level mathematics lesson: Are there viable alternatives
*(Report No. SE051515)? Garden City, NY: Adelphi University.
(ERIC Document Reproduction Service No. ED320774)

This study investigated student achievement differences between
three mathematics programs: *Explorations* (Addison Wesley),
*Mathematics* (Silver Burdett), and the *Comprehensive
School Mathematics Program* (*CSMP*). Manipulative use
varied among the programs, ranging from a highly hands-on manipulative
approach (Addison Wesley) to an abstract focus incorporating no
manipulatives (*CSMP*). *Mathematics* (Silver Burdett)
was a combination of both approaches. Five elementary schools
in a predominantly white middle-class district were the subjects
for this study. After sampling the three series, 18 teachers
were voluntarily assigned the pilot programs: five working with
Addison Wesley resources, five incorporating Silver Burdett materials,
and eight using the *CSMP*.

The three mathematics programs were implemented in first grade,
with an average class size of 21 students, over the course of
one school year. Pre-testing was administered during a one-day
window in October and post-testing was completed in the spring
during a two-day period. Data from the tests, teacher questionnaires,
and structured interviews were used to determine effectiveness
of the programs. An analysis of covariance (ANCOVA) was completed
to evaluate whether students performance was above or below the
expected scores. Results show the *CSMP* as the most effective
in raising students to a higher achievement level. The *Explorations*
cohort showed the least gains. Teachers in this program reported
the following concerns: excessive time spent creating resources,
complexity in managing the classroom, and the need for extra time
to complete lessons.

Kieran, C., & Hillel, J. (1990). ?It?s tough when you have to make the triangles angle?: Insights from a computer-based geometry environment. Journal of Mathematical Behavior, 9, 99-127.

Kiernan and Hillel (1990) found that sixth-grade students using the computer-microworld virtual manipulative made significant gains in understanding the nature of isosceles triangles.

Kim, S. (1993). The relative effectiveness of hands-on and computer-simulated manipulatives in teaching seriation, classification, geometric, and arithmetic concepts to kindergarten children. (Doctoral dissertation, University of Oregon, 1993). Dissertation Abstracts

International, 54(09), 3319.

Kim (1993) found no statistically significant differences between kindergarten students who viewed or used physical manipulatives and those using virtual manipulatives on measures of addition, geometric classification, and counting skills.

Kjos, Ruth, Long, K. (1994). Improving Critical Thinking and Problem Solving in Fifth Grade Mathematics. An Action Research Project Submitted at Saint Xavier University (Chicago, Illinois). Available ERIC Document 383 525

This research describes an intervention to improve the critical thinking and problem solving ability of fifth grade students. The study was conducted with 171 fifth grade students from two public schools in Illinois. The research methods included student math autobiographies, teacher created tests, teacher surveys, and student surveys. The instructional interventions implemented to improve critical thinking skills and problem solving were student journal writing about metacognitive processes, direct instruction to students on how to think critically about and solve problems, and the use manipulatives to improve instruction. Specific manipulatives that were used were tangrams (shapes and area), unifix cubes (area and perimeter), colored counters (probability), base ten blocks (place value and decimals), pattern blocks (fractions and percents), and calculators (percents). The study concluded that the implementation of the above mentioned teaching strategies improved student attitudes, increased the students' ability to write about their own thinking, and increased student problem solving abilities.

Kohler, M., Kohler, E. (1996). Improving Mathematics Education in Grades 6-9 through the Integration of Content, Technology, and Manipulatives: Formal Cumulative Evaluation Report. National Science Foundation Grant ESI-9155296. Available ERIC Document ED 401 129

This report described the findings of a three-year project in Alabama which focused on improving the teaching behaviors, knowledge, and attitudes of 58 mathematics teachers in grades 6-9. Research methods used were pre- and posttests, grades, focus groups, questionnaires, interviews, observations, and evaluations. This paper reported whether or not the participants felt the project was successful rather than describing the actual methods used over the three year study to improve teaching behaviors, knowledge, and attitudes. Nevertheless, the research concluded that participants felt that their mathematics knowledge was increased and they were more skilled at using manipulatives and computers in their instruction and felt they did so more frequently and effectively after participating in the study. Teachers also noted improved student performance and attitudes in their classrooms.

Lackey, B. and Reglin, G. (1991). Manipulatives
and Achievement of Subtraction Basic Facts for Rural Second Grade
Students. __Journal of Research in Education, 1,__ 53-56.

In this qualitative research, the study investigates the effects of a manipulative instructional approach and traditional instruction on the achievement of subtraction facts for 4 African-American and 26 white second graders in a rural North Carolina public school. The 30 subjects were below/average, average, and above average in ability. There was no correlation between the race and ability of the subject. The 30 students were broken down into two groups. One group used a traditional approach to the subtraction facts. The other group used a manipulative approach. The data was collected through tests, and the ability to communicate their understanding of subtraction. It was concluded that greater gains in achievement were of subtraction basic facts occurred with the manipulative instruction approach.

Lara-Alecio, R., Parker, R., Aviles,
C., Mason, S., & Irby, B. J. (1998). A study of the use of
manipulatives in the assessment of mathematics instruction with
ESL Hispanic students. *Bilingual Research Journal, 22*(2-4),
215-235.

__Summary:__ I'm including this reference and abstract because
it seems like an ideal research article for our group. Unfortunately,
the report is written in Spanish only. If anyone is able to translate,
I'd be interested in reading it. The follow abstract was the only
part available in English.

__Official Abstract:__ As an alternative form of mathematics
assessment for use with limited-English-proficient students, 14
mathematics tasks using manipulatives were administered to 45
Hispanic students in grades 1-3 and readministered 2-3 weeks later.
Test reliability and validity, task difficulty, and the relationship
among test subscales across grades were examined.

__One final note:__ I found abstracts of dissertations that
sounded very interesting and informative on the topic of education
research with math manipulatives, but I learned that acquiring
doctoral dissertations from other universities is very difficult
and/or costly. In some cases, the abstracts included detailed
information about the research and findings that could be useful
to us in our own dissertation research. If you are interested
in investigating this, check the library databases on the GMU
library web site, and search in the topic "Education" to find
the "Dissertation Abstracts" database.

Leinenbach, Marylin; Raymond, Anne M. (1996). __A two-year
collaborative action research study on the effects of a "Hands-on"
approach to learning algebra__. Paper presented at the annual
meeting of the North American Chapter of the International Group
for the Psychology of Mathematics Education, Panama City, FL.
Available: Eric Document 398 081

The two-year study consisted of two phases: phase one involved
instruction with algebra manipulatives and phase two was a follow
up on participants from phase one. The first phase consisted
of five eighth grade classes, approximately 120 students, age
13. The second phase was a follow up on the same students regarding
their retention of the manipulative "algebra learning strategies"
during their 9^{th} grade math course. The manipulative
used was "Hands-on-Equations" developed by Dr. Henry Borenson.
The manipulative uses pawns, number cubes and a balance to teach
the concept of solving linear equations.

The first phase consisted of three parts. The first nine weeks involved instruction taught in a non-manipulative style using the adopted textbook. The 26 lessons, Hands-on Equation manipulative program were then implemented. After the completion of the manipulative lessons, the instruction returned to a non-manipulative style with the adopted textbook.

Data collection methods consisted of surveys, student reflections, work samples, test scores and interviews. Students were encouraged to use manipulatives during quizzes and tests that were designed in a format that paralleled the manipulative instruction. All students took a mandatory standardized algebra test at the end of the school year.

The results of the first phase revealed that the class averages during the textbook phases were lower than the manipulative phase. The teacher noted that students were better able to show understanding of algebraic concepts with the manipulatives. The teacher's concern was that she had weakened the students' abilities to work algebraic problems without manipulatives, but the results of standardized exam revealed that 80% of the students scored 60% or better. This far exceeded the expectations of the administration and colleagues and led Leinenbach to believe that she had successfully helped students bridge the gap between concrete and the more abstract algebra.

The second phase consisted of a survey of all students who participated
in the 8^{th} grade study, and only nine responses were
received for the second phase of the study. No results were reported
for this phase.

McClung, Lewis W. (1998). __A study on the
use of manipulatives and their effect on student achievement in
a high school algebra one class__. Unpublished master's thesis,
Salem-Teikyo University, Salem, WV. Available: Eric Document
425 077

McClung's nine-week study investigates the use of Algeblocks in a high school Algebra I class. There are 2 classes, 49 students in total, of sophomore and junior level students, ranging in age from 15-17 years. The manipulative studied is Algeblocks and the topic of the lessons taught during this nine week study is polynomials.

The study consists of a pretest, treatment and posttest. The control group, Group A receives a traditional teaching method of lecture, homework, and in-class worksheets. The treatment group, Group B receives traditional teaching method of lecture, homework, but instead of in-class, worksheets the students work with the manipulative Algeblocks.

McClung uses a two-sample t-test to analyze the data. The pretest data reveal that there is no significant difference between the two groups but the posttest analysis reveals that there is a significant difference in the achievement levels of the two groups. A comparison of the group means shows that Group A mean = 77 while Group B's mean = 52. These results would seem to indicate that the use of manipulatives in algebra at the high school level is not beneficial.

McClung suggests several key factors that may have influenced the results. The students were out of the range of concrete operational stage and into the formal operational stage of development. The students were not allowed to use manipulatives on the posttest.

The instructor was new to the concept of using manipulatives and did not acquire sufficient knowledge of the manipulatives before the study began which resulted in the manipulatives not being properly incorporated into the curriculum.

McCoy, L. P. (1989). __Perceptual Preferences of Mathematically
Deficient Elemntary Students: Implications for Instruction.__
U.S. Indiana: National Center for Research on Teacher Learning.
(ERIC Document Reproduction Service No. ED305 379)

Subjects in this study were eleven students from two public schools enrolled at a university remedial mathematics clinic. Another group consisted of eight average/above average students experiencing slight or no difficulties in mathematics. The students were in grades 3 through 6. The focus of the qualitative study was on assessing the use of concrete materials in mathematics instruction, comparing the perceptual preferences of mathematically-deficient and average/above average elementary school students, and using the information to make recommendations for instruction.

Results concluded that the students in the average/above average group preferred an auditory or visual mode of learning, while the remedial students preferred a kinesthetic mode. There was no difference in preference for tactile mode. The final conclusion is that the remedial students would benefit from more diverse instructional activities. The results strongly support the use of concrete manipulatives.

Meira, L. (1998). Making sense of instructional devices: the
emergence of transparency in mathematical activity. __Journal
for Research in Mathematics Education, 29__ (2), 121-142.

The investigator explored the idea of __transparency__, explaining
it as an index of the learner's access to mathematical knowledge
and activities. He tried to discern, through this study, whether
transparency resides in the manipulative itself, or whether transparency
emerges from the user's interaction with the manipulative, given
his or her background.

Nine pairs of eighth graders, aged 13-14, participated in the study on a volunteer basis after school. All investigated the concept of linear functions. Three pairs each were randomly assigned to use winches, springs, or number machines. The winches had rollers of different circumferences around which were wound cords with objects tied to their ends. The springs could hold weights of various sizes. The number machines were computers with input/output displays.

The investigator observed the classes of the participants for three weeks prior to their two after school 1 1/2 hr problem-solving sessions, which were videotaped.

The manipulatives that were used were ranked by their epistemic fidelity, that is, by which should inherently show the concept of linear functions most clearly. They were judged to be ordered as follows: winch, spring, computer display. The videotapes were analyzed to see if the students found transparency in the same order.

It became clear that it is not the manipulative itself that "contains" the concept, that is, transparency does not reside in the object. Rather, transparency emerges in the process of the objects being used by students who come to the task with prior knowledge and who participate in discussion that ensues in their use. It was found that the winch and spring, judged most transparent inherently, were the least transparent to the students. While these two manipulatives were supposed to make math concepts apparent, the students had to expend much effort, instead, including employing math, to make sense of the manipulatives. On the other hand, students readily made mathematical inferences about linear functions from the input/output computer display.

Moore, J. L., and Schwartz, D. L. (1994). __Visual Manipulatives
for Proportional__ __Reasoning.__ U.S. Tennesse: National
Center for Research on Teacher Learning. (ERIC Document Reproduction
Service No. ED376 200)

The goal of the qualitative research was to design a learning environment that facilitates a move from implicit to a more explicit understanding of proportionality. 49 high ability sixth grade mathematics students using the Jasper Adventure Series of problems participated in the research. The Jasper Adventure Series was developed by the Cognition and Technology Group at Vanderbilt in 1992. The research was conducted based on pre-post test and being able to extrapolate and visually prove answers. Students were more successful using manipulatives.

It was concluded that the potential of a manipulable visual representation for highlighting the structural invariances within a proportion and the proportional invariances between domains leads to an understanding that transfers to more complex proportional problems.

Moyer, Patricia S. (2001). Are we having fun yet? How teachers use manipulatives to teach mathematics. Educational Studies in Mathematics: An International Journal, 47(2), 175-197.

Teachers often comment that using manipulatives to teach mathematics is "fun!" Embedded in the word "fun" are important notions about how and why teachers use manipulatives in the teaching of mathematics. Over the course of one academic year, this study examined 10 middle grades teachers' uses of manipulatives for teaching mathematics using interviews and observations to explore how and why the teachers used the manipulatives as they did. An examination of the participants' statements and behaviors indicated that using manipulatives was little more than a diversion in classrooms where teachers were not able to represent mathematics concepts themselves. The teachers communicated that the manipulatives were fun, but not necessary, for teaching and learning mathematics.

Neiderhauser, D.; Stoddart, T. (2001). Teachers' Instructional Perspectives and Use of Educational Software. Teaching and Teacher Education, 17(1).

1. Age/grade level: elementary school (K-6) teachers

2. Number of participants: 1093 teachers

3. Manipulatives used: educational software

4. Math concept taught: basic math skills and open-ended problems

5. Duration of the study: survey data

6. Research methods/procedures: written survey (questionnaire)

7. Results: Eighty-five percent of the teachers surveyed used only skill-based software. Teacher surveys reflected a learner-centered orientation and a constructivist view of learning, but those values were not reflected in their children's computer use. Virtual manipulatives, characterized as open-ended software, would promote a constructivist approach to computer learning. Unfortunately, teachers view virtual learning as different then classroom learning.

Noble, T., Nemirovsky, R., Wright, T., &Tierney, C. (2001).
Experiencing change: the mathematics of change in multiple environments.
__Journal for Research in Mathematics Education, 32__ (1),
85-108.

The investigators carried out a case study, observing how two fifth-grade boys explored the concepts of the mathematics of change across several embodiments of change. The essential concepts are rate of change, which in calculus would be the derivative, and accumulation, which in calculus would be the integral. The class that the boys were in was participating in a four-week unit on the topic. The investigators filmed the whole classroom and also focused in on one group of two boys.

The students in the class had taken trips across the classroom, proceeding at different rates, marking their progress by dropping bean bags at specified time intervals. It was, therefore, possible for them to see that the space intervals between the bean bags differed depending on their rate of movement across the room.

The study focused on the boys' interaction with three additional embodiments of the mathematics of change. The first embodiment was taking trips with Cuisenaire rods of two lengths along meter sticks. The second was a similar exploration on a written table of values. The third was a computer software program called Trips ©.

The investigators explored two concerns: 1) where the mathematics reside, that is, whether in the manipulative or in the students, and 2) how students make connections across embodiments.

On the first point, they argue that the mathematics emerges from the students' process of making the environment into a lived-in space for themselves rather than in the manipulative materials themselves. While the designer of an activity may have certain expectations for what the student will experience, the way students act and make sense of their actions can vary widely from the designers' expectations. A space is considered "lived-in" when the students' interactions with it are relational, intentional, and creative. "Relational" refers to how the changes affect the space as a whole, "intentional" describes a space in which students do things and accomplish purposes, and "creative" spaces are those in which the space is constantly being recreated as it is experienced.

On the second point about students making connections, the investigators describe students as finding family resemblances among the embodiments together with their own background of experience. The strength of the concept results from the overlapping of many fibers, as in a thread.

In the specific investigation of the two boys, the researchers observed that the boys brought to the three embodiments their previously owned concept of racing, even though the curriculum developers had deliberately avoided terminology of racing in the design. Nevertheless, this allowed the boys to make the space their own, by enabling them to become engaged and to interact with the environments on their own terms. The boys got similar numerical results in the table and computer environments. However, because of some difficulty with manipulating the Cuisenaire rods, the numbers in this environment did not match the results in the other two environments. Nevertheless, the boys were able to criss-cross their experiences and find "family resemblances" among the various embodiments of trips, with their underlying concepts of rates of change and accumulation. The boys found similarities among the trips, while each trip retained its own identity.

Noss, Richard. Healy, Lulu. Hoyles, Celia. (July 1997). __The
Construction of Mathematical Meanings: Connecting the Visual with
the Symbolic__. Educational Studies in Mathematics*. *33(2),
203-33.

In this paper, we explore the relationship between learners'
actions, visualisations and the means by which these are articulated.
We describe a microworld, *Mathsticks*, designed to help
students construct mathematical meanings by forging links between
the rhythms of their actions and the visual and corresponding
symbolic representations they developed. Through a case study
of two students interacting with Mathsticks, we illustrate a view
of mathematics learning which places at its core the medium of
expression, and the building of connections between different
mathematisations rather than ascending to hierarchies of decontextualisation.

This is a qualitative case study- observation between a pair of students with one computer. They needed to program a computer to complete the task presented.

The students empirical solution emerged from their expressions of the invariant structures, rather than preceding them. Second, with Mathsticks the means of expressing actions is firmly soldered to the activity. The students were responsible for placing the matches in such a way that the colour-change occurred, and for establishing the rhythms of action which led to their becoming expressed symbolically.

Nute, N. (1997). The impact of engagement activity and manipulatives presentation on intermediate mathematics achievement, time-on-task, learning efficiency, and attitude. (Doctoral dissertation, University of Memphis, 1997). Dissertation Abstracts International, 58(08), 2988.

Nute (1997) found no statistically significant differences between fourth-, fifth-, and sixth-grade students who viewed or used physical manipulatives, virtual manipulatives, or both on measures of patterning and geometric transformations. However, all groups scored higher than those students with no manipulative exposure.

Nute, N. (1997). The impact of engagement activity and manipulatives
presentation on intermediate mathematics achievement, time-on-task,
learning efficiency, and attitude. __Dissertation Abstracts
International, 58__(08), 2988.

This study examined the effect of engagement activities and manipulative-type presentations on students' math achievement, time-on-task, learning efficiency, and attitude. The participants were 241 intermediate students (grades 4, 5, and 6).

Students were randomly assigned to groups. Six groups received a combination of instructional strategies using manipulatives--both concrete and computer. One control group had no manipulatives. Data was collected in three ways: students took a post-test measuring their achievement of patterns content, completed a time-on-task measurement, and filled out an attitude questionnaire.

The results indicated that the computer only presentation took more time than the concrete manipulative only presentation. With regard to grade level effects, time-on-task was equal for fourth and fifth graders. Efficiency was higher for sixth graders than for fourth and fifth graders. Manipulative groups showed higher-level recognition and application achievement performances than the control groups. Overall, manipulative instruction strategies showed more effective for higher-order tasks than did no manipulatives instruction.

Outhred, L.N. & Michelmore, M.C. (2000) Young
children's intuitive understanding of rectangular area measurement.
__Journal of Research in Mathematics__. 31(5). pp 602-625.

A sample of 115 children was randomly selected from 40 Grades 1 to 4 classes in four schools serving a range of cultural groups in a medium socioeconomic area of Sydney. The focus of this research was to analyze the strategies young children use to solve rectangular covering tasks before they have been taught area measurement.

**Research Questions: **

1. What strategies do young children use to find the number of unit squares that cover a rectangle?

2. Can children's strategies be classified into a sequence of developmental levels?

3. What operational principles underpin this developmental sequence?

Information concerning the strategies that children used to solve a variety of array-based tasks was collected in individual interviews conducted early in the school year. The interviewer (the first author) inferred children's strategies from a combination of observation and careful questioning as the children worked through tasks involving drawing, counting, and measurement

Children's solution strategies were classified into 5 developmental levels; Level 0: Incomplete covering, Level 1: Primitive covering, Level 2: Array covering, constructed from unit, Level 3: Array covering, constructed by measurement, and Level 4: Array implied, solution by calculation.

Four Principles Underlying Rectangular Covering

1 |
The rectangle must be completely covered by the units, without overlaps or gaps. |

2 |
The units must be aligned in an array with the same number of units in each row. |

3 |
Both the number of units in each row and the number of rows can be determined from the lengths of the sides of the rectangle. |

4 |
The number of units in a rectangular array can be calculated from the number of units in each row and in each column. |

Crucial learning leaps occurred when children start thinking in terms of rows. Initially, rows are recognized as geometrically equivalent; the fact that the number of units in each row is constant emerges later. Finding the number of rows is the next problem to be solved; when this problem is solved, a child is only a short step from being able to calculate the total number of units.

An important implication is that students need to link area measurement to both linear measurement, and multiplicative concepts before the area formula can be meaningfully learned.

Parham, J. L. (1983). A meta-analysis of the use of manipulative materials and student achievement in elementary school mathematics. Dissertation Abstracts International 44A, 96.

Park, J. (1993). Time studies of fourth graders generating
alternative solutions in a decision-making task using models and
computer simulations. __Journal of computing in childhood Education,
4__ (1), 57-76.

This study is a quantitative study completed with 240 fourth graders from 12 classrooms in two public school districts. The students all had prior experience using the computer. The purpose of this study was to determine any differences in the time required to complete a decision making task presented in four different ways. Participants in the study manipulated bags of real jellybeans as well as images bags of jellybeans on the computer screen. Variables looked at in this study were the time between when the task was given and the student begin to show his or her response, the estimated time-per-move while developing the first response, and the time required if another response could be produced. The computer kept track of the data generated during the computer simulation and research cues on an audiotape were used to collect times during the manipulatives were used. This study was conducted outside of the regular classroom; a researcher sat beside the student and read all instructions and questions from the computer monitor. In addition, the researcher provided scripted prompts. These were recorded in a notebook or on an audiotape.

The researcher uses the definition for decision-making as "the process of making reasoned choices among two or more alternatives based on judgments that are consistent with the knowledge and value of the decision-maker."; The task in this study is a computer simulation in which two children have tied while playing a video game and they must show a fair way to divide nine bags of different color jellybeans between the two players. Stratified random sampling was used to assign the 240 fourth graders to one of four treatment groups. During a 15-20 minute session each group was given one of the four simulations modes. The simulations were 1) a micro simulation of the task where the student entered their selection through keyboard input, 2) a micro simulation of the task where the student entered their selection through keyboard input and had bags of jelly beans present for reference, 3) a micro simulation of the task where the student entered their selection through light pen input, and 4) a manipulation mode where students use real bags of jelly beans for distribution.

Multivariate and univariate analysis were carried out on the three time variables. The results of the analysis indicates that the mode of presentation makes a difference in the decision making time in this simulation. It appears from these results that it takes longer to make a decision when using computer simulations of concrete situations than when using the concrete manipulative even when the concrete manipulative is near by for reference or when using a light pen rather than the keyboard to enter responses. An analysis of other data collected seems to indicate that students think differently in the different presentation mode. Also, in all four simulations, it took students longer to generate the second alternative than it did additional alternatives.

Perry, L., & Grossnickle, F. (1987). *Using selected manipulative
materials in teaching **mathematics in the primary grades
*(Report No. SE047844). Long Beach, CA: California State
University. (ERIC Document Reproduction Service No. ED280684)

In this report, 75 primary teachers in 11 Southern California
schools participated in a survey regarding the availability and
usage of specific mathematics manipulatives. Questionnaires were
distributed to two teachers at each grade level from kindergarten
through third grade. Teachers were asked to estimate the degree
of utilization for each of the following manipulatives: abacuses,
base ten blocks, Cuisenaire rods, and unifix cubes. The four-category
scale for usage was: *often*, *some*, *seldom*,
and *not used*.

Analysis of the completed questionnaires showed a correlation
between availability and usage. Unifix cubes were the most available
(92%) and the most highly used manipulative, with 75% of teachers
reporting usage *some* of the time or *often*. Cuisenaire
rods were found in 71% of the schools, but only 7% of the schools
used them *often* and 33% used them *some*. Base ten
blocks and abacuses were available in 45% of the schools, with
63% of teachers reporting *not used*. All 75 teachers in
this study reported using manipulatives at some point during mathematics
instruction. Several recommendations were included in this study:
continue research on the effectiveness of manipulatives, encourage
school districts to identify manipulatives for the development
of pertinent concepts and skills at each grade level, and urge
school systems to train teachers on effectively incorporating
manipulatives.

Pesek, D. & Kirschner, D. (2000). Instrumental instruction
in subsequent relational learning. __Journal for Research in
Mathematics Education, 31__ (5), 524-540.

Instrumental instruction emphasizes rote memorization of formulas and skills while relational learning emphasizes the intent to have students derive meaning from their math experience. The authors express concern about a prevalent practice in these days of high stakes testing in which teachers dedicate a significant portion of class time to instrumental instruction with the intention of preparing students for these tests, sometimes before students have had the opportunity for relational learning on the topic. The authors investigated whether interference to learning with meaning is set up by having students perform rotely before understanding.

The topic selected was area and perimeter of squares, rectangles, parallelograms, and triangles. The manipulatives employed were students' hands, 1-inch square tiles, geoboards, grid paper, and plain paper. The investigators studied six classes of fifth graders, taught by two teachers. Each class was split into two groups.

The study was experimental. One group received instrumental instruction for five days prior to relational learning for three days. This group was called I-R. The second group received only relational learning for three days. This group was referred to as R-O, but because it received relational learning during the same three days as the I-R, it seemed to me that it should be the O-R group. An assortment of tests were administered to the students. All students took a pretest, a posttest after the relational learning, and a 2-week retention test. In addition, the I-R students received a test after their instrumental instruction.

Another component of the study was a series of three interviews with six students from each group, a stratified random sampling. All of the interviews were recorded on audiotape and the final interview was also captured on videotape.

The quantitative results showed no significant difference. However, the qualitative results from the interviews gave another picture. The I-R group experienced cognitive, attitudinal, and metacognitive interference.

Evidence for cognitive interference was that I-R students tended to confuse area and perimeter. While they knew that area was an appropriate measure for carpeting, when faced with wallpaper, their concepts failed them. Since walls go around a room, many incorrectly applied the concept of "around" that they had associated with perimeter. The I-R students used more formulas and were fixed in their approaches, while the O-R students used conceptual and flexible methods. In addition, they applied their relational knowledge in practical ways. In contrast, the I-R students said that their knowledge might be useful for tests and college.

Attitudinal interference was observed in the I-R students. The possession of prior attitudes and belief about area and perimeter prevented their full engagement in the relational learning on the topics.

Finally, metacognitive interference occurred. While the O-R students had explanations that showed reasoning, that made sense, and were more grounded in the concrete, the I-R students applied formulas randomly and either could not explain the meaning of formulas or gave confused explanations of them. The new relational learning seemed to disrupt what they were hanging on to from the instrumental instruction.

Peterson, S., Mercer, C., Tragash, J., & O'Shea, L. (1987).
*Comparing the concrete to abstract teaching sequence to abstract
instruction for initial place value skills * (Report No. EC301777).
Gainesville, FL: Florida University Department of Special Education.
(ERIC Document Reproduction Service No. ED353744)

In this study, place value skills were taught to 24 learning disabled elementary and middle school students (ages 8-13). Two approaches were compared. The first approach introduced skills in a concrete, semi concrete, abstract sequence. The second method presented skills only at the abstract level. Subjects were screened prior to the study to ensure limited knowledge of place value skills. Students scoring 70% or lower were included. Control groups and experimental groups were created and students were assigned to a group at random.

Both groups received instruction during nine lessons. Only one lesson was taught per day. The experimental group received three lessons at each of the three levels: concrete, semi concrete, and abstract. The manipulatives used were unifix cubes, place value sticks, and place value strips. The control group was instructed only at the abstract level. After the nine lessons were completed, students were given a posttest. On the acquisition measures, students in the experimental group identified one and tens significantly higher than the control group. In comparing scores between the screening and retention generalization measures, the experimental group performed better, although some students were not yet able to generalize. Results show that manipulatives enhanced skill acquisition and retention. The overall gain in scores among the experimental group denotes the concrete to abstract teaching sequence as the more effective approach.

Pleet, L. J. (1990). The effects of computer graphics and mira on acquisition of transformation geometry concepts and development of mental rotation skills in grade eight (Doctoral dissertation, Oregon State University, 1990). Dissertation Abstracts International, 52(06), 2058.

Pleet (1990) found no statistically significant differences between eighth grade students using physical manipulatives, virtual manipulatives, or no manipulatives on measures of geometric transformations.

Pleet, L. J. (1990). The effects of computer graphics and Mira
on acquisition of transformation geometry concepts and development
of mental rotation skills in grade eight. __Dissertation Abstracts
International, 52__(06), 2058.

This study compared the use of the Motions computer program versus the Mira manipulative. Its purpose was to examine whether the Motions program was a more effective tool for helping eighth graders acquire transformation geometry concepts and develop mental rotation skills. The study also looked for sex differences.

Participants included 15 teachers at 15 different schools and involved 560 students in 30 classes. Sixteen classes comprised the experimental group: eight classes used the Mira manipulative and eight classes used the Mirrors program. Eight teachers taught one of each. Fourteen classes comprised the control group; seven teachers taught two of these classes each.

The students took a pre- and post-test and were given a questionnaire. There were three weeks between the pre- and post-test. Data was analyzed using analysis of covariance. With regard to transformation concepts, the results showed no significance difference in the means of the Mira or Motions groups, of the females in the Mira or Motions groups, and of the males in the Mira or Motions groups. A significant difference (.05 level) was found between the means for males in the Mira and Motions groups. With regard to rotation, the results showed no significant difference in the groups or in the sexes.

Pratt, D. (2000). Making sense of the total of two dice. __Journal
of Research in Mathematics Education__, 31(2). pp. 144-167.

Making Sense of the Total of Two Dice 16 Children ages 10-11 years old used Chance maker virtual manipulative for 2 and 2.5 hour sessions exploring math concepts of probability.

**Research Questions**

1. What are the internal resources that children use to make sense of the total of two dice?

2. When children make sense of the total of two dice, what new internal resources do they forge through the interaction of their internal and external resources?

3. In this interactive process, what features determine the extent to which these new resources become tools for the forging of further connections in related activity?

**Research methods and procedures**

The sessions were conducted as clinical interviews during which the researcher acted as a participant observer, interacting with the children to probe the reasons behind their actions and later interpreting these reasons in the light of observations based on other children's work. In general, the aim was to allow the children to be in control of their explorations by making decisions and moving in directions of their own choice. Students were involved in probability experiments involving two spinners and two dice. The actions of the children within the computer environments were videotaped and the discussions were transcribed. The transcripts were analyzed and the researcher identified consistencies and differences.

**Results**

Students entered the study with an equi-probability bias with respect to the total (sum) of two dice. Through the interaction of the chance maker tool, they were able to recognize that some totals were represented more often than others. When they moved from the two spinner activity to the two dice activity, the lesson realized in the first session was not automatically cued in different situation. Students again articulated the equi-probability bias. The researcher concluded that although the newly formed construct was available for learners to use in different contexts, it did not have as high a priority in their mental scheme as their prior construct.

Rust, A. (1999) __A study of the benefits of math manipulatives
versus standard curriculum in the comprehension of mathematical
concepts__. Dissertation Paper. ERIC document 436-395.

This study involved twenty- one first grade students with a range of abilities. Their ages ranged from 6-7. The study began about the end of September and carried though about 8 weeks. The four math concepts taught for the research were addition, subtraction, measurement, and fractions. The class was divided into two groups and worked on two concepts simultaneously.

This study attempted to determine which teaching method, manipulatives or the standard curriculum, allowed the students to learn first grade math concepts. The manipulatives used were unifix cubes, personal chalkboards, and work mats. The standard curriculum used was the Mathematics Plus workbook by Harcourt Brace Jovanovich. The Knox County Math skills test was the first test given, and the second test was a Teacher Checklist Manipulatives

Results: Statistics showed that teaching using the book and testing with the Knox County Math Skill test showed more learning than the teaching with the manipulatives and testing with the Teacher Checklist Manipulative Evaluation. The research proposed that students could be used to testing with paper and pencil than with the manipulative objects. Some seemed to learn better by manipulating the objects, where as others did not need the hands on help. Even though students were able to learn the material no matter which way it was taught, there were definite differences in student enjoyment.

Schultz, K. A. (1984). __The Average Ability
Middle School Student and Concrete Models in Problem Solving:
A Look at Self-Direction.__ U.S. Georgia: National Center of
Research on Teacher Learning. (ERIC Document Reproduction Service
No. ED244 836)

This qualitative study investigated several aspects of a teaching experiment which focused on five seventh grade students' performance on nonroutine number theory problem-solving with a close look at the role of heuristics, concrete models, and the relationship between these variables. The focus was on those students who did not qualify for a remedial or gifted program in the school system. In the experiment, students were given a series of lessons on number theory, heuristics, concrete models, and the microcomputer. The microcomputer was used to present the problem, facilitate hint selection, and to record student work. This study was conducted for one school year in a suburban middle-class Atlanta public school. In all there were 30 subjects out of 78 seventh graders. The data was gathered in questionnaires, Cold Problem-Solving Test and Post Problem-Solving Test.

The results indicate that all students showed improvement in problem-solving ability and increased use of concrete models. Compared to above-average and below-average students, the average ability students showed the greatest gain in demonstrated problem-solving ability and the greatest use of concrete models.

Sharp, Janet M. (1995, Oct). __Results of using Algebra Tiles
as meaningful representations of algebra concepts__. Paper
presented at the annual meeting of the Mid-Western Research Association,
Chicago, IL. Available: Eric Document 398 080

The study conducted by Janet Sharp was a two-year study of high school students and the use of Algebra Tiles. The study consisted of two three weeklong experiments over a two year period. The manipulative used in both experiments was Algebra Tiles.

The first experiment studied factoring algebraic expressions and was conducted in a rural high school, with 37 algebra one students ranging in age from 15 to 18. There was one treatment group (n=11) and two control groups (n=13, n=13). The same teacher taught the treatment group and one control group. The treatment group used math Algebra Tiles during their instruction. All groups took the same departmental test at the end of the three-week period.

The second experiment, a full year experiment on the use of manipulatives, was conducted in a suburban high school with 20 algebra students, ranging in age from 13 to 16, and one 9 year old. The experiment had a treatment group (n=10) and a control group (n=10). The treatment group was exposed to one manipulative type problem each week during a twenty-two week period before the experiment. Both groups were instructed for a three-week period with the use of manipulatives during their study of addition, subtraction, multiplication and factoring algebraic expressions.

Student t-distribution tests revealed that there was no significant difference (alpha = .025 level, two tailed) between group means in either experiment. Students were classified as "unusual" if their test score was within a calculated chapter test score confidence interval, but their previous semester's grades were below the calculated confidence interval to predict semester grades. Further analysis was conducted on their writing and interview responses.

Sharp concluded that students learn algebra through several modes of representation. Narrative data revealed that the greatest power of the Algebra Tiles was not in increasing test scores, but the alternative representation system that was provided. Many students mentioned that they were able to "visualize the problems" which is a skill that is unlike memorized facts or rote manipulations.

Slack, J. B., & St. John, E. P. (1998). *A model for measuring
math achievement test performance: A longitudinal analysis of
non-transient learners engaged in a restructuring effort*.
San Diego, CA.

__Summary:__ The researchers studied 62 "non-transient"
elementary school students in Louisiana over a period of four
years. Five "innovative" instructional approaches were
used, one of which was math manipulatives and technology. Using
logistic regression, the researchers attempted to determine if
any particular instructional approaches were significant predictors
for standardized test score improvement. One finding was the students
who had received four years of the math manipulatives and technology
instructional approach were more likely to improve their math
scores than those who had less years with that approach.

__Official Abstract:__ This study investigated the mathematics
achievement test performance of 62 non-transient elementary school
learners in accelerated schools using a longitudinal design. Both
the California Achievement Test (CAT) and the Louisiana Educational
Assessment Program (LEAP) test were included in this investigation.
In particular, this study sought to determine whether accelerated
schools with distinct contextual features experienced significantly
different test performances. A logistic regression was used to
explore the relationship of several variables to the schools'
performances. The variables were related to individual background,
school environment, and curriculum and instruction factors. The
researchers developed two logistic regression models to fit the
uniqueness of the CAT and LEAP tests. Each model used a sequential
analysis to examine the association of specific factors to test
score improvement. The most consistent, significant finding across
both models revealed that higher ability students were less likely
to improve than lower ability students. This finding is consistent
with the Accelerated Schools philosophy that "disadvantaged"
students stand the most to gain from innovative teaching approaches.
Additional findings showed the significant impact of age, gender,
school environment, and curriculum and instruction on improvement.
In particular, observations related to the latter factor revealed
that students who were provided with math manipulatives/technology
for longer periods were more likely to improve their standardized
math scores than those who were provided with such instruction
for shorter periods.

Smith, J. P. (1995). The effects of a computer microworld on middle school students? use and understanding of integers. (Doctoral dissertation, Ohio State University, 1995). Dissertation Abstracts International, 56(09), 3492.

Smith (1995) found that sixth- and eighth-grade students using the virtual manipulatives scored significantly higher on tests of integer addition and subtraction than both those students who worked with physical manipulatives and those who used both treatments.

Sowell, E. J. (1989). Effects of manipulative materials in mathematics
instruction. *Journal for Research in Mathematics Education,
*20(5), 498-505.

This is a meta-analysis of the results of 60 studies combined to determine the effectiveness of manipulatives on mathematics instruction.

__Participants__: Included in the 60 studies in this meta
analysis were 17 studies in grades k-2, 17 in grades 3-4, 9 in
grades 5-6, 11 in grades 7-9 and 6 at the post secondary level.
The studies used in the analysis included 38 journal reports,
3 unpublished reports, and 19 dissertations.

__Manipulatives:__ The manipulatives used in the studies included
beansticks, Cuisenaire rods, and geoboards in addition to others
not identified in the report.

__Math concepts taught: __ A broad range of concepts were
included. However, this study focused on commonalities in concept
retention, transfer, and attitude.

__Methodology__: A meta-analysis was done using quantitative
measures.

__Results__: The analysis indicated that the mean effect for
retention was not significant (p<.05). The studies that included
data on transfer was also considered to be non-significant. However,
the data on attitudes about mathematics varied in significance
based on random assignment to study groups and length of the treatment.

Steele, D. F. (1994, April). *Helping preservice teachers confront
their misconceptions about mathematics and mathematics teaching
and learning.* Paper presented at the Annual Meeting of the
American Educational Research Association, New Orleans, LA.

In the study *Helping Preservice Teachers Confront Their Conceptions
about Mathematics and Mathematics Teaching and Learning,* Diana
F. Steele explored the questions that guided her research were:
"Could I, through modeling constructivist teaching, effect a change
in these students conceptions about mathematics?"(Steele, 4)
and "What are the conceptual changes?"(Steele, 4).

__Participants__: The participants for this study consisted
of 19 preservice students enrolled in a course "Teaching Mathematics
in the Elementary School" (Steele, 6) at the University of Florida
at Gainesville.

__Manipulatives:__ Steele used a variety of manipulatives
in her study including pattern blocks, fraction circles, and fraction
squares.

__Math concepts taught: __ Fractions

__Methodology__: Steele used "observation, interviewing and
collection of artifacts"(Steele, 5) as the research approach.
Data was collected within a controlled environment over a significant
duration of time using both qualitative and quantitative methodology.

__Results__: Steele analyzed the data collected using the
procedures described as the "developmental research sequence"
(Steele, 6). The qualitative data indicated that the students
conceptions about teaching and learning of mathematics began to
change over the course of the study. The quantitative analysis
consisted of analyzing the Mathematics Beliefs Scales. The students
entered the course with beliefs that students should be learning
mathematics through learning number facts by drill and practice.
The answers on the post assessment focused on children constructing
their own knowledge of math concepts with the teacher acting as
a facilitator. The descriptive statistics reflected scores converging
to zero with zero representing the most constructivist score possible.
The range on the pretest was significantly higher than on the
post-test, demonstrating that the students' conceptions of teaching
and learning have shifted. Using a "single factor analysis of
variance" (Steele, 29) Steele tested whether the differences in
the means for the pre- and post tests were statistically significant.
She observed that there was a significant difference; therefore
she accepted her alternative hypothesis.

Steele, D. (1993). What Mathematics Students Can Teach Us About Educational Engagement: Lessons from the Middle School. Paper presented at the Annual Meeting of the American Educational Research Association (Atlanta, Georgia, April 13, 1993). Available ERIC Document ED 370 768

The purpose of this paper was to study the attitudes and understandings that middle school students have about mathematics. The research was conducted over a four month period with 53 students in two seventh grade classes taught by the same teacher. Students were observed, formal and informal interviews were conducted, and data was analyzed from homework and tests. The researcher discovered that students were more engaged and motivated when actively involved in the learning process, when using manipulatives, and when working in cooperative groups. The researcher concludes that math instruction needs to move away from the traditional lecturing, rote memorization, and computation out of context and more toward student centered activities.

Stellingwerf, B.P., & Van Lieshout, E.C.D.M. (1999). Manipulatives
and number sentences in computer aided arithmetic word problem
solving. __Instructional Science 27__(6), 459-476.

This is a two factorial pretest-posttest-control quantitative study that was carried out in the Netherlands with 122 students with mean age of 11.3 years. These students had learning problems or were mildly mentally retarded. The purpose of the study is to gain more information about instruction methods that will improve how well children with learning problems are able to solve word problems. Three instructional methods or treatments were examined as a part of this study; using external representation with manipulatives only, using mathematical representation with number sentences only, or using a combination of both. The treatments are embedded in a computer program because the computer has the capability to provide direct feedback and is able to diagnose students abilities For this study the manipulatives are icons on the computer screen.

The 122 participants in the study were randomly placed into four treatment groups and one control group. One group learned to solve word problems by writing open and closed number sentences only. A second group learned to solve word problems using manipulatives only. The manipulatives were combined with writing open and closed number sentences for the third group. A fourth group was taught to solve number sentences without manipulatives or without writing number sentences. In the four treatment groups participants were given corrective feedback when errors occurred during the lesson. A fifth or control group received no treatment at all. Since the literature review supported that both using manipulatives and writing number sentences improve students problem solving ability, one hypothesis for the study is that students in the groups receiving the manipulatives only, number sentence only, or a combination of the two treatments will outperform students who are taught to solve the word problems with out benefit of either. A second hypothesis is that students in any of the four treatment groups will out perform students in the control group.

The experiment consisted of four stages. In the pretest stage participants were given a paper and pencil test to assess their reading level, nonverbal intelligence, ability to write number sentences, and ability to solve word problems. Word problems were categorized using the semantic structure scheme developed by Heller and

Greeno. In the second or the computer training stage where students were individually instructed on how to use the computer program. The third or treatment stage consisted of 12 individual sessions of up to 30 minutes per session on the computer. The problem was read to the students and each treatment group was limited in the time they could work before entering an answer to the problem on the screen. Feedback was provided if the solution was incorrect. At the posttest stage the four treatment groups were administered two performance tests via the computer and a third paper and pencil post test was administered to all five groups.

A factorial repeated measurement ANOVA was carried out to test the first hypothesis. From this analysis there was some evidence that high competent children were better off with the writing number sentence only treatment than with the combination of writing number sentences with using manipulatives. An ANCOVA was carried out to test the second hypothesis and partial support indicating that participants who received the manipulatives only treatment as well as those who learned to solve the word problem without manipulatives or without writing down the number sentences did better than the control group that received no treatment.

The conclusion of the study is that children with learning disabilities benefit from computer aided instruction for solving simple arithmetic problems. In addition, the implication for designing instruction is that using manipulatives, writing number sentences, and teaching children to use mental methods to solve word problems can each have a positive effect on improving students ability to solve word problems. The method to be used and the transition within the curriculum from one stage to the next will be different for different students as well as for different kinds of word problems.

Suydam, M.N. (1986). Manipulative materials and achievement. Arithmetic Teacher, 33(6), 10, 32.

Suydam, M.N. (1985). Research on Instructional Materials forMathematics. ERIC Clearinghouse for Science, Mathematics, and Environmental Education, Columbus, OH. (ERIC Document Reproduction Service No. 276 569).

Suydam, M.N., & Higgins, J.L. (1977). Activity-Based Learning in Elementary School Mathematics: Recommendations from Research. ERIC Center for Science, Mathematics, and Environmental Education, Columbus, OH.

Terry, M. K. (1996). An investigation of differences
in cognition when utilizing math manipulatives and math manipulative
software. __Dissertation Abstracts International, 56__(07),
2650.

This study investigates the effectiveness of manipulatives and manipulative software on computational skills and spatial sense. The students were in grades two, three, four, and five. There were three treatment groups: manipulatives only, manipulative software, and both manipulatives and manipulative software. Students participated in a three week unit focusing on computation (addition in grades two and three and multiplication in grades four and five) and a one week unit on spatial sense. Base Ten Blocks were used in the computation unit and attribute blocks in the spatial sense unit. Both were used in concrete and software form.

A three way analysis of variance was used to interpret the data. In four of the six ANOVA's for computation, there was a significant difference for the group using both concrete manipulatives and software. With regard to spatial sense, there was no significant difference detected. There was on significant gender interaction effect.

Teachers reported a preference for using computer software. They felt software made it easier to manage instruction, improved time-on-task, and increased student enthusiasm.

Terry, M. K. (1996). An investigation of differences in cognition when utilizing math manipulatives and math manipulative software. (Doctoral dissertation, University of Missouri-St. Louis, 1996). Dissertation Abstracts International, 56(07), 2650.

Terry (1996) found that students in Grades 2-5 using both the physical and virtual manipulatives scored significantly higher on tests of addition, multiplication, and spatial sense than students using either of the treatments alone.

Threadgill-Sowder, J. A., & Juilfs, P. A. (1980). Manipulatives
versus symbolic approaches to teaching logical connectives in
junior high school: An aptitude x treatment interaction study.
__Journal for Research in Mathematics Education, 11__(5), 367-374.

The purpose of this study was to examine interactive effects between mathematics achievement and manipulative versus symbolic instruction. Participants were 147 seventh graders at two junior high schools. Students were randomly assigned to manipulative or non-manipulative groups and participated in six mini-lessons teaching logical connectives such as conjunction, disjunction, negation, etc. The manipulatives group used color-coded cards and attribute blocks.

Students were given an aptitude test about one month before the treatment. The treatment lasted three days. After, students were given a 25 item multiple-choice test and a 20 item transfer test. A one-way analysis of variance was conducted on the data. No significant difference was found between the manipulatives and symbolic treatment groups. However, generally higher mathematics achievers performed a little better with traditional methods. Students who were generally lower mathematics achievers performed a little better with manipulative methods.

Thompson, P. W. (1992). Notations, conventions and constraints:
Contributions to effective uses of concrete materials in elementary
mathematics. *Journal for Research in Mathematics Education*,
23(2), 123-147.

In the study *Notations, conventions and constraints: Contributions
to effective uses of concrete materials in elementary mathematics,*
Patrick Thompson investigated the way in which students' engagement
with manipulatives contributed to their construction of meaning
for decimal numeration and operations (Thompson, 123).

__Participants: __ Twenty fourth grade students enrolled in
a university lab school participated in this study (Thompson,
130).

__Manipulatives: __ Base ten blocks and *Blocks Micro World.*

__Math concepts taught: __ Decimal operations.

__Methodology: __Quantitative methods were used during this
study. A pretest/post test design was used with two treatment
groups. One group used concrete decimal blocks and the other used
*Blocks Micro World *a computer based decimal block program
created by the author.

__Results: __The results of the posttest were analyzed in
two parts. First, the students' computational accuracy between
the pretest and posttest showed no significant change in both
groups. However, the students' responses to questions dealing
with new content introduced during the study on decimal numeration
and calculation with decimal numerals was examined and found that
the *Blocks Micro World *students were more likely to give
answers (although often inaccurate) that suggested that they were
based on principals of numeration.

Thompson, P. W. (1992). Notations, conventions, and constraints: Contributions to effective uses of concrete materials in elementary mathematics. Journal for research in mathematics education, 23, 123-147.

Thompson (1992) found that fourth-grade students using the virtual manipulatives made greater gains in understanding addition and decimal addition than those students who worked with the physical manipulatives.

Tracy, D.M. & Panelli, B.H. (2000__) Teaching money concepts:
Are we shortchanging our kids?__ Research Report. ERIC Document
451-065

72 First and Second graders used Proportional money model, coins for four half hour sessions over 8 weeks. The math concepts taught were:

- Number of each coin equaling one dollar
- How many cents each coin was worth
- How to skip count with one dollars worth of the same coin
- Used the proportional and visual models to construct money concepts.
- Research methods and procedures

Two first grade classes used the concrete and visual money model. A third first grade classroom used traditional teaching method and were randomly pre and post tested. The second grade classes were selected randomly doe pre and posttests. The objective for the money models and traditional groups were

- Recognizing coins
- Knowing coin names
- Knowing coin values, skip counting
- Counting on with coin combinations and
- Determining how many of each coin are needed to equal one dollar.

Results

In first grade, students show near mastery of learning coin names but lower ability to match coin with value. Both the traditional method and money model group had an overall post- test score of less than 50%. Thus, First grade teachers should not expect mastery of money concepts. In skip counting, first graders were good with pennies but had difficulty with nickels, dimes, and quarters. Only 7/35 students were successful in counting a set of mixed coins cognition and value. Posttest revealed that among second graders in the money group 100 % could correctly skip count dimes, nickels, pennies in a set, with quarters at 67 %. Data indicates that students â€˜ ability to count on with a variety of coins is developmentally appropriate among second grader suburban students.

Vinson, B.M., Haynes, J., Brasher, J., Sloan,
T. & Gresham, R. (1997) __A comparison of preservice teachers'
mathematics anxiety before and after a methods class emphasizing
manipulatives__. Paper presented at the Annual Meeting of the
Midsouth Educational Research Association, Nashville, TN.

This study investigated changes in mathematics anxiety levels among future teachers in two different math materials and methods courses.

Research Method

It included 87 novice teachers who took elementary or intermediate
level mathematics teaching classes Two strategies were used to
gather data at the beginning and the end of each quarter. 1)
98 item questionnaire, the mathematics Anxiety Rating Scale (MARS).
The treatment was a hands on approach to teaching mathematics
with manipulatives in the methods and material courses. After
the 10^{th} week, they took the MARS again. 2) Questionaire
guided narrative interview about factors influencing levels of
math anxiety.

Results:

A multivariate analysis variance revealed a statistically significant reduction in mathematics anxiety level between the fall and winter quarters. The change in their anxiety could be the function of using a) Bruner's framework of developing conceptual knowledge before procedural knowledge, and b) manipulatives to make mathematics concepts more concrete.