| Summary: | 碩士 === 國立臺南大學 === 數學教育學系教學碩士班 === 98 === This study applied the Geometer’s Sketchpad to design dynamic assistant learning materials for learning the concept of polygon area in many forms. We chose two subjects for carefully studying the effect of using the materials. In pretest, the students were not able to explain the forming process of area formula (including rectangle、square、triangle、trapezoid、parallelogram), and had rigid strategy of problems solving. They were not able to use the conservation area concept of polygons wisely. After the teaching experiment, the students are able to integrate the concept of polygon area in many ways, and can have more elastic strategies on solving problems. This study shows that the dynamic assistant learning materials can help student to build up polygon area concept, and have more solid understanding about it.This study has the following conclusions：一、After the teaching experiment ,the students have more understanding about area concept and can build up their own mental image.二、After the teaching experiment ,the students have more elastic strategies on solving problems and don’t only rely on using the formula to solve problems.三、 After the teaching experiment ,the students can use the conservation area concept of polygons to solve problems and have dynamic and elastic mental image in their mind.四、After the teaching experiment ,the students have more interest in learning area concept ,their learning effect improves, and they can learn more actively.
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