“讲评课”是高三后期复习的主要课型 ,也是“训练———批阅———讲评”环链中关键一节 .因为在通常情况下 ,有什么样的讲评法 ,便有什么样的答卷术 ,所以 ,“如何上好试卷讲评课”的话题总能引起广大数学教师的普遍关注 .但中学课堂上试卷讲评课“无的放矢、就事论事、一讲 “Seminar Lecture” is the main course for reviewing in the third year of senior high school. It is also a critical section in the “training --- review -- commentary” loop. Because under normal circumstances, what kind of method of assessment is there? Answering, so, the topic of “How to get good papers on assessment and assessment” can always arouse the general concern of mathematics teachers. But in the middle school class test papers, “Nothing is done, everything is discussed, and everything is discussed.