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笔者听了三位老师讲正弦函数和余弦函数的图像课后倒觉得奇怪,奇怪三位老师只管讲画图而画图,并没有给学生什么思考,什么启发,什么引导.笔者就想:是不是这一节画图课中教师真找不到地方使学生思考呢?还是教师真找不到机会启发和引导学生呢?
After hearing the images of the sine and cosine functions of the three teachers, I noticed that the three teachers simply said nothing about pictures and drawing, and did not give any thought to the students and what inspired and guided me. Is it true that a teacher can not think of a drawing lesson for students to think about? Or does the teacher really have no chance to inspire and guide students?