课后练习题很多是有实际科技背景或以真实物理现象为依据的问题,做这样的练习题可以提高学生学习物理的兴趣和培养学生理论联系实际、实事求是的科学态度。但这些练习题有的题干比较长、数据繁琐、运算复杂,而且将现实问题转化为物理问题也不太容易,这在一定程度上会影响练习量,怎样解决这个矛盾? Many post-lesson exercises are questions that have actual scientific and technological backgrounds or are based on real physical phenomena. Doing such exercises can improve students’ interest in learning physics and develop students’ scientific attitudes in linking theory with practice and seeking truth from facts. However, these exercises have long questions, complicated data, and complicated calculations. It is also not easy to translate practical problems into physical problems. This will affect the practice volume to a certain extent. How to resolve this contradiction?