| Summary: | 碩士 === 醒吾科技大學 === 行銷與流通管理系所 === 106 === With the development of computer information technology and the popularization of the Internet, instructors have more diversified methods in their teaching application. The computer-assisted instruction plays an important role in the teaching scene. Integrating technology tools to enhance students’ learning achievement is a great concerned issue of instructors. Geometry is a more abstract element in mathematics learning and students often have poor learning effecctiveness.
This study takes “Circumcenter, Incenter and Centroid of a Triangle” as the teaching unit. The samples in this study are 59 ninth-grade students of a junior high school in Yilan. This study uses quasi-experimental method with the nonequivalent pretest-posttest design to explore students’ learning effectiveness. One class has appointed to the experimental group and the other has appointed to the control group. The experimental group implemented “GeoGebra Computer Assisted Instruction” while the control group used the “Traditional Presentation Method.” The teaching experiment period is three weeks for exploring the differences of learning achievement, learning attitude, and learning retention in geometry mathematics after students accepted “GeoGebra Computer Assisted Instruction” and “Traditional Presentation Method” respectively. According to the findings, we make suggestions to teachers who adopt GeoGebra Computer Assisted Instruction.
The findings are as follows:
1. GeoGebra Computer Assisted Instruction can improve the learning achievement of lower achiever in “Circumcenter, Incenter and Centroid of a Triangle” significantly and achieve significant benefits.
2. “GeoGebra Computer Assisted Instruction” help most students in learning Geometry and has significant effect.
3. “GeoGebra Computer Assisted Instruction” can enhance low-scoring students’ Mathematic learning attitude and has significant effect.
4. “GeoGebra Computer Assisted Instruction” and “Traditional Presentation Method” don’t have obviously differences in Mathematical learning performance and retention.
Keywords: GeoGebra, Computer-Assisted Instruction, Teaching Experiment
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