中学物理教学中,有很多内容让师生感到难教难学,如受力分析问题、牛顿运动定律的应用问题、动量问题、波的传播问题、电场概念问题、带电粒子在电磁场中的运动问题、电磁感应中的能量转化问题等等.在这些内容的教学中,物理教师为了有效地教给学生学习方法、培养学生的解题能力、教学生学会学习,一般都是在通过概念教学的同时,再选择典型例题,寓相应问题的物理思想和物理方法教学和解题能力的培养于例题教学之中.但通常典型的例题,其技巧性、综合性往往都比较强、难度也较大.而且例题越典型,学生越是难懂、难理解、难接受.结果是事与愿违,中 There are many contents in secondary school physics teaching that make teachers and students feel difficult to learn, such as stress analysis, application of Newton’s law of motion, momentum, wave propagation, concept of electric field, motion of charged particles in electromagnetic field , The problem of energy conversion in electromagnetic induction, etc. In the teaching of these contents, in order to effectively teach students how to learn, to train students’ ability to solve problems and to teach students to learn, physics teachers generally pass the concept teaching , And then select the typical examples, the corresponding problems of physical thinking and physical methods of teaching and problem-solving ability in the teaching of examples, but usually the typical examples of the skill, the synthesis is often stronger and more difficult. And the more typical examples, students more difficult to understand, difficult to understand, hard to accept. The result is contrary to expectations, in