学好物理离不开解题 .但在应试模式教学中 ,单纯做题 ,枯燥乏味 ,学生入了题海有“苦海无边”之感 .那么 ,如何在习题教学中贯彻素质教育 ,激发学生研究问题的兴趣呢 ?笔者以为“联系实际解题”不失为好的方法之一 .例 1 .设宇宙空间中某两个天体质量分别为M、m .它们相距较近? Learning physics is inseparable from the problem solving. However, in the exam mode teaching, the problem is simple and boring. The student has entered the sea of ​​questions and has a sense of “bitter sea.” Then, how to implement quality education in the exercise of exercises to stimulate students to study issues? What is the interest? The author thinks that “contacting practical problems” is one of the best methods. Example 1. Let the masses of two heavenly bodies in the space be M and m respectively. Are they close to each other?