中学物理习题，浩如烟海，要提高物理教学的质量，教师不仅要精心选题，而且还应善于对习题进行变换，这样既可以达到举一反三、触类旁通、培养学生思维的目的，又可减轻学生课业负担，使学生少受题海之苦．下文就谈谈物理习题的一些变换方式．一、逆向变换逆向变换指将问题的 The physics exercises in secondary schools are astonishing. In order to improve the quality of physics teaching, teachers must not only carefully select topics, but also should be good at transforming exercises so that they can achieve the purpose of reciprocal thinking, class comprehension, and cultivation of students’ thinking, while also reducing the burden on students’ work. Make students less subject to the hardships of the sea. Let’s talk about some transformations of physics exercises. First, reverse transformation inverse transformation refers to the problem