“先学后教”的教学方式凸显了学生的主体特性及教师的主导特性,它需要师生之间有效配合。同时,“先学后教”的内容和开展策略要具有典型性、针对性和概括性,有利于学生掌握新知内涵,有利于教师有效引导。 “First-time teaching” teaching method highlights the main characteristics of students and teachers of the leading characteristics, it requires effective coordination between teachers and students. At the same time, the content and strategy of “learning after teaching” should be typical, targeted and generalized, which is good for students to grasp the connotation of new knowledge and help teachers to guide them effectively.