解答习题,能使学生牢固地掌握基础知识,培养学生灵活运用所学知识,分析解决问题的能力。但并不是习题越多越好,越难越好。过去一段时间,物理教学受“题海”浪潮的冲击,大搞繁难的计算题,忽视基本练习题,尤其忽视了说理题的训练。可以说,目前从初中到高中,说理题练习是一个薄弱环节。这种现象,应该引起我们足够的重视。说理题包括问答题、概念题、论证题。解答这类习题,要求学生清楚地理解物理现象和物理规律,善于虚用它们来解释自然现象,解决生活和技术中的实际问题。然而学 Answer exercises to enable students to firmly grasp the basics, students develop the flexibility to use what they have learned, analyze the ability to solve problems. But not the more exercise the better, the harder the better. Over the past period, physics teaching has been hit by the tide of “inscribing the sea”, carrying out complicated calculation questions and ignoring the basic exercises, especially neglecting the training of the problems. It can be said that at present, from middle school to high school, the problem-solving exercises are a weak link. This phenomenon should cause us enough attention. The rationale includes question and answer questions, concept questions and argumentation questions. Solving these types of exercises requires that students clearly understand the physical phenomena and physical laws, be good at using them to explain natural phenomena and solve practical problems in life and technology. However learn