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分类是初中数学常见的基本数学思想之一,也是数学中考重要的考查内容。很多师生都清楚,当一个问题中某种量的情况不同可能引起问题结果的不同时,需要对这个量的各种情况进行分类讨论。但是大家在重视对分类思想解决具体问题能力培养的同时,往往忽略了用分类思想作为一种策略指导学生解题。接下来,笔者就结合自己的教育教学实践,介绍一下如何用分类讨论指导学生复习迎考。
Classification is one of the basic mathematical ideas common in junior high school mathematics, but also an important test in mathematics exams. Many teachers and students are aware that when the quantity of a different situation in a question may cause different results, it is necessary to classify the various situations of the quantity. However, while paying attention to the ability to classify specific problems to solve the problem, we often overlook the use of classification as a strategy to guide students to solve problems. Next, I will combine their own teaching practice, how to introduce the class discussion guide review students.