函数概念的引入应体现比较归纳和抽象概括的过程,概念的讲解应以典型例题为载体,分析关键词的含义,并适当的运用反例辨析函数概念的本质。1研究的问题函数是学生进入高中后学习的一个很重要的概念,也是高中阶段教学的一个重点和难点,初中、高中函数概念的一个很重要区别就是从“变量说”到“对应说”。《普通高中数学课程标准(实验)》(以下简称“课 The introduction of function concept should reflect the process of induction and abstraction, and the explanation of concept should be based on typical examples as the carrier, analyze the meaning of keywords, and use the counter examples appropriately to analyze the essence of the concept of function. 1 The problem function of the study is a very important concept for students to study in high school. It is also a key and difficult point in high school teaching. A very important difference between the concepts of junior high school and high school is that from the ”variable“ to ”corresponding“ Say”. “Ordinary high school mathematics curriculum standards (experiment)” (hereinafter referred to as "lesson