如何上好数学复习课,是值得探讨和思考的一个问题．笔者认为:要想上好数学复习课,必须唱好“三步曲”．下面以复习《平面几何》第六章《圆》为例,谈一下具体做法． How to get a good math review class is a question that is worth exploring and thinking about. The author believes that: In order to take a good mathematics review class, we must sing “three steps.” Let’s talk about concrete practices by reviewing the sixth chapter “Circle” of “Plane Geometry” as an example.