教师在课堂教学的导入环节经常会设计一些巩固旧知、为新知做铺垫的内容。观察增加相关的复习内容带来的不同教学效果,说明教师在教学时要立足学生的起点,以学生为本进行教学,才能有效引导学生掌握新的知识和方法。 Teachers in the introduction of classroom teaching are often designed to consolidate the old knowledge, to pave the way for the new content. Observing the different teaching effects caused by the increase of relevant review contents shows that teachers should base their starting points on teaching and conduct student-oriented teaching so as to effectively guide students to acquire new knowledge and methods.