数学的学习过程除课前预习、课上听讲外还有一个重要环节就是习题的评讲和订正.讲评一般分为经常性讲评,这可以针对学生练习情况弥补教学中的缺陷和学生学习的知识缺漏.其次是阶段性讲评,这是在一个章节练习之后,帮助学生将所学知识系统化,并更加深刻理解掌握。如引导学生概括题目的类型,归纳各类题型的知识结构和解题特点,同类知识结构对比, The process of mathematics learning in addition to class preview before class, there is an important part of the class lectures is the comment and correction exercises. Comments are generally divided into regular comments, which can make up for the deficiencies in teaching and student learning knowledge of student practice Lack of leakage. Followed by stage comment, which is in a chapter practice, to help students systematize the knowledge, and a more profound understanding of mastery. Such as guiding students to summarize the types of topics, summarizing the knowledge structure and problem-solving characteristics of various types of questions, comparing the similar knowledge structure,