Bulletin of theory and practice in secondary education Issue 67
2021-03-31 発行

コンピュータを用いた生徒の予想をもとにした作図の授業実践

A Study on Teaching Geometric Construction based on the Expectation of the Student Using a Computer
INOUE, Yoshifumi
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abstract
The purpose of this study is to examine the figure instruction of high school mathematics by analyzing the lesson with regard to geometric construction. I practiced a class based on expectation of the student using a computer, and the problem of drawing figures when the product of the length for two drawn lines was minimized was included by the class. The student supplements a defect of the proof by looking back on the process of the solution to the problem, and, through an activity to change the condition of the original problem and to develop the problem further, they were able to deepen the viewpoint for the figure. It is important that we promote transformation of the attitude of the student toward learning mathematics through developing the problem voluntarily.