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- W2247494830 abstract "The purpose of this study was to investigate whether regular use of dynamic geometry software enhances students' abilities to make generalizations in geometry. Three high school geometry classes participated in the study. The experimental group consisted of two classes taught by the researcher, and used Cabri Geometry II (on individual TI-92 calculators) on a regular basis for exploring concepts in geometry. The third class, taught by another teacher, served as a control group. While both groups used the same textbook and followed the same course of study, the control group did not use dynamic geometry software. Data sources for the study were: scores on an Entering Geometry Student Test (EGST), a generalization pre- and posttest, task-based interviews, and classroom observations of each group. No significant differences were found between the groups on the EGST or on the generalization pretest. Analysis of covariance (ANCOVA) was used to control for initial differences on the EGST and the generalization pretest. Results of the ANCOVA test did not show any significant differences (p < .05) between the groups on the generalization posttest. Task-based interviews with a subset of fifteen students from each group were conducted to further investigate differences between the groups on their ability to generalize. Six geometry tasks were posed to the students. The sixth task contained multiple parts. Student responses to the tasks were classified into high, medium, or low response categories based on criteria developed by the researcher. A chi-square analysis showed that there was a significant relationship (p < .05) between group membership and performance in ten of the fifteen categories of the task analysis. The experimental group showed a greater tendency to make and test conjectures during the interviews. Results of the interviews and classroom observations of the experimental group indicate that regular use of dynamic geometry software seems to enhance students' abilities to make generalizations in geometry." @default.
- W2247494830 created "2016-06-24" @default.
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- W2247494830 date "2001-01-01" @default.
- W2247494830 modified "2023-09-26" @default.
- W2247494830 title "The impact of dynamic geometry software on students' abilities to generalize in geometry" @default.
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