笔者借助知网,以“巧变习题”为关键词进行检索,结果发现:从1993年12月至2016年3月的这23年间,与“巧变习题”相关的文献共有6篇,且全是期刊。其中,数学4篇,物理2篇。可见一直以来,巧变习题似乎成了数学、物理老师们的专利。理科教学中,教师若能充分挖掘课本习题的潜在价值,巧妙改变习题,恰当地对习题进行演变、引申、拓广,便能使学生对所变习题既有熟悉感又有新鲜 With the aid of the net, the author searches through the key words of “clever exercises” and finds that there are 6 articles related to “clever exercises” during the 23 years from December 1993 to March 2016 Articles, and all journals. Among them, 4 are maths and 2 are maths. It can be seen that the problem of coercion has always been a patent for maths and physics teachers. In science teaching, if teachers can fully excavate the potential value of textbook exercises, skillfully change exercises and properly evolve, extend and broaden exercises, students will be familiar with and fresh