论文部分内容阅读
在初中数学的概念、定理、法则、公式等基础知识中,有不少是分类给出的,遇到涉及这些知识的问题,就可能需要分类讨论.另外,有些数学问题在解答中,可能条件或结论不唯一确定,有几种可能性,也需要从问题的实际出发进行分类讨论.把被研究的对象分成若干种情况,然后对各种情况逐一进行讨论,最终得以解决整个问题,这种解决问题的方法称为分类讨论思想方法.它体现了化整为零与积零为整的思想,是近年来中考重点考查的思想方法.分类讨论思想方法也是一种重要的解题策略.分类思
In junior high school mathematics concepts, theorems, rules, formulas and other basic knowledge, many are given by the classification, encountered in the knowledge of these issues may need to discuss the classification.In addition, some mathematical problems in the solution, the possible conditions Or the conclusion is not uniquely determined, there are several possibilities, but also need to discuss the classification of the problem from the actual point of view of the object under study is divided into several situations, and then discuss the various situations one by one, and ultimately to solve the entire problem, this The method to solve the problem is called classification and discussion of thinking method, which embodies the thought of rectification and zeroing and zeroing, and is the method of thinking and examining the key points of examination in recent years.It is also an important strategy to solve the problem. think