分类讨论是一种重要的数学思想方法。在初中数学学习过程中,借助分类讨论、逻辑划分的手段处理实际数学问题,会起到其他方法难以达到的效果。一般来说,分类讨论和化整为零有相似之处,均是对数学问题进行各个击破,再作出系统的结合归类与整理,只是前者比后者更具严密性。如何进行分类讨论,需要教师在平时授课时参考教材内容和学生的学习情况,随时给予必要的举例应用和现场指导,从而把分类讨论的思维特点充分表现 Category discussion is an important mathematical method. In junior high school mathematics learning process, by means of classification and discussion, logical division of the actual mathematical problems, will play other methods are difficult to achieve results. In general, there are similarities between categorized discussion and zeroing, all of which break down math problems separately and then systematically combine and classify them, only the former is more rigorous than the latter. How to carry on the classification discussion, need the teacher to refer to the teaching material content and the student’s learning situation in the usual teaching, at any time gives the necessary example application and the scene guidance, thus fully demonstrated