| Summary: | 碩士 === 國立臺中教育大學 === 數學教育學系在職專班 === 106 === The purpose of this study is to use the "learning trajectory" theory to carry out the teaching experiment of object sharp concept for the first-grade in primary school. This study attempted to analyze the content of three kinds of textbooks and design teach activities, to set learn objectives and study lists, to use the blocks, clays, watercolor let students to Carried out. We collect and analyze relevant information of four students, to understand the learning performance in the learning process of thinking and possible myth concept, to provide follow-up to improve the teaching content or order, to help students construct a complete and systematic concept of three-dimensional shape.
The conclusions are as follows:
1. In the three-dimensional body classification activities, students will be easy to resent the study of various types of bodies according to their characteristics to distinguish between plane, surface, show through the cube, cuboid, cylinder, sphere through the stack to define the plane and surface.
2. For the various types of stereo-body rubbing, a few students took a series of rubbing, and most of the students did some random rubbing.
3. A small number of students can provide various types of body shape according to the nature of the analysis and shape, most students are the overall visual view of the body shape.
4. After the various types of stereoscopic bodies are flattened, most of the students can recognize the same stereoscopic form by using the stereo heart image.
5. Most students can count the number of blocks and identify the position of the blocks after they are moved by the stacks and movements of the various types of stereo bodies.
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