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ERIC Number: EJ1105590
Record Type: Journal
Publication Date: 2011
Pages: 10
Abstractor: As Provided
ISSN: EISSN-2156-1400
Randomized Control Trials on the Dynamic Geometry Approach
Jiang, Zhonghong; White, Alexander; Rosenwasser, Alana
Journal of Mathematics Education at Teachers College, v2 n2 p8-17 Fall-Win 2011
The project reported here is conducting repeated randomized control trials of an approach to high school geometry that utilizes Dynamic Geometry (DG) software to supplement ordinary instructional practices. It compares effects of that intervention with standard instruction that does not make use of computer drawing/exploration tools. The basic hypothesis of the study is that use of DG software to engage students in constructing mathematical ideas through active investigations results in better geometry learning for most students. The study tests that hypothesis by assessing student learning in classrooms randomly assigned to treatment and control groups. The project is currently in its second year, and has just completed its first implementation of the DG approach, related data collection, and some initial data analysis. HLM models showed that the treatment group significantly outperformed the control group in geometry achievement. While the effect of the DG treatment is of moderate size for all participating students the largest effect size occurs with students in Regular Geometry classes.
Program in Mathematics and Education, Teachers College, Columbia University. 525 West 120th Street Box 210-M, New York, NY 10027. Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Middle Schools; Secondary Education; Junior High Schools; High Schools
Audience: N/A
Language: English
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Identifiers - Location: Texas
Grant or Contract Numbers: 0918744