习题课是初中物理不可少的一种课型,它贯穿于整个物理教学的始终。实际教学中,我们经常可以看到这样的情况,教师在教学中试图通过大量例题来代替对基本概念和基本规律的理解,盲目地追求高难度和高密度训练;采用题海战术,重复练习多次,一些偏题、怪题更是让学生伤透脑筋。这样的习题课其结果是耗时低效,挫伤了学生的学习积极性。如何在习题课中提高教学效率呢?一、课前要精选习题,对学生的学习具有指导性(一)习题要具有典型性。这就是说一道题要具有代表 Exercises is an essential lesson in junior high school physics, which runs through the entire physics teaching. In the actual teaching, we often can see such cases. Teachers try to replace the basic concepts and basic laws by a large number of examples in teaching, blindly pursue the difficult and high-density training; adopt the tactics of the sea and repeat the practice more Times, some biased, strange problem is to allow students to scratch his head. The result of this exercise is time-consuming and inefficient, dampening the enthusiasm of students. How to improve the efficiency of teaching in the exercise class? First, to select the exercises before class, to guide the learning of the students (a) exercises to be typical. This means that a question should be represented