我们在传统的教学中,教师尽管经常强调学生课前要先预习,课上要认真听讲,课后要及时复习,但由于老师的不得法或无法掌控,以及学生自身的不自觉、不主动等诸多因素,导致学生的预习复习效果往往不佳,甚至根本不做。老师在课堂上只好花费大量时间进行讲解,其结果终归还是事倍功半的教学:学生不动脑筋被动听课,不会主动学习,课堂效率总是不高。实际上书本上的大部分知识学生通过 We in the traditional teaching, teachers often stressed that students should preview before class, class to listen carefully, after class to review in time, but because of the teacher’s out of control or out of control and the students themselves are not conscious, not active, etc. Many factors, leading to the effectiveness of the preview of the students often poor, or even not done. The teacher spent a lot of time in the classroom to explain, the result is ultimately less effective teaching: students do not mind passive listening class, not active learning, classroom efficiency is not high. In fact, most of the students in the book pass