初中函数概念起始课有效教学的案例分析

Analysis of Effective Teaching in Junior High School of the Function Concept Staring Lesson Case

函数一直以来是初中生学习的一个难点,在初中函数起始课教学的时候一定要重视起始课的研究。其实函数的概念一般都是用变量来进行定义的,这种方式让学生更加容易接受,但也有一定的弊端。为让学生更好地对函数进行理解,在教学的过程中,开展函数起始课教学的时候要有整体的大局观念;提供有效的数学例证,让学生从数学化走入形式化;概念在进行巩固阶段例题的引入是由浅入深的。此外,函数的概念在整个数学的发展史上也有着举足轻重的作用。

The function is always a difficulty for junior middle school students to learn,in the junior middle school functions when starting teaching must attach importance to research of starting class. Actually function is commonly used variables for the concept of definition,this way make students more easily to accept,but there are also some disadvantages. To make students better to understand function,in the process of teaching,to carry out the functions when starting course teaching should have the overall situation of whole idea. Provide effective mathematics example, lets the student from mathematically into formalized process. The introduction of the concept in the consolidated phase sample is distinguished. In addition, the concept of function in the whole history of mathematics has a pivotal role.