1问题的由来最近,有幸听到了县教研室组织的高三一轮复习示范课,讲课的是周老师,使我感触良多.周老师讲的是《三角函数的图像与性质——第二课时》的高三一轮复习课,从教态、教法、学生互动方面看,确实起到了示范作用,但有一个细节问题引起了我的注意. 1 The Origin of the Problem Recently, I was fortunate enough to hear the senior teachers’ reviewing class organized by the County Teaching and Research Office and I was very much influenced by the lectures given by Mr. Zhou. “Teacher Zhou is talking about” Images and Nature of Trigonometry - "The senior high school one review class, from the teaching, teaching methods, student interaction aspect, did play an exemplary role, but there is a problem of detail caught my attention.