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一次函数是初中数学的重要内容之一,它在实际问题及综合性问题中都有着极为广泛的应用,而且在以后的数学乃至其他学科的学习中,也都发挥着基础性与工具性的作用.那么,怎样才算较好地掌握了一次函数知识呢?不妨从下面三个步骤进行:第一步、明意义一、函数“明意义”的基本体现对函数相关的问题,能够从以下两个方面来观察、认识和把握:1能从“总体感知”和“具体对应方式”两个视角来认识与考虑问题;2能从“整体过程”和某些“特殊值的对应情
First-order function is one of the important contents of junior high school mathematics. It has a very wide range of application in practical problems and comprehensive problems, and also plays a fundamental and instrumental role in the study of mathematics and other subjects in the future So, how can we better grasp the knowledge of a function? May wish from the following three steps: The first step, the meaning of a sense, the function of the ”basic meaning of“ the basic expression of the function-related issues, The following two aspects to observe, recognize and grasp: 1 from the ”overall perception“ and ”specific correspondence“ to understand and consider the two perspectives; 2 from the ”whole process“ and some ”The special value of the corresponding situation