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自从讲尺规作图以来,学生的情绪一直很高涨,因为这一章需要学生自己动手绘图,使他们有很高的学习兴趣。这段时间,我的情绪也被学生那强烈的求知欲感染着,却忽视了概念的讲解,这差点造成教学上的失误,事情是这样的——那节课我讲尺规作图的第五个基本作图——线段的垂直平分线,对线段的垂直平分线这个概念我只是简单地讲解一遍,便让学生做题,在任意一个三角形中,作出它的垂直平分线。我想,这道题简单,于是找
The sentiment of students has been on the rise since speaking of ruler drafting, as this chapter requires students to make their own drawings so that they have a high interest in learning. During this time, my emotions were also infected by the intense curiosity of students, but I neglected to explain the concepts, which almost caused mistakes in teaching. This is the case - Five basic plots - the vertical bisector of a line segment, the vertical bisector of a line segment I’ll simply explain that concept and let the student do the question, making a vertical bisector in any of the triangles. I think this question is simple, so find