在琳琅满目的超市里,我们可以根据自己的需要,来选购商品.在数学复习课时,若我们也能把知识当成“商品”摆放出来,让学生根据自己的情况,去复习已学的知识,学习未掌握的知识,这样既能提高学生学习的自主性、积极性,又能提高他们的学习效率.本文拟就《勾股定理》一章的复习,谈谈自己的一些做法和体会. In an array of supermarkets, we can purchase products according to our own needs.In the mathematics review class, if we can also put knowledge as “commodity ” placed, so that students according to their own situation, to have to learn Of knowledge, to learn the knowledge not mastered, so that both to improve the autonomy of students learning, enthusiasm, but also improve their learning efficiency.This article is about the “Pythagorean Theorem” chapter review, to talk about some of their own practices and experiences .