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物理图像作为表示两个量或多个量相互关系的一种常用方法,近年来逐渐受到中考命题者的青睐,但对刚刚接触数学函数图像、抽象能力不强的初中生而言,理解掌握物理图像确实有很大的困难。如何突破这一学习难点,寻找最佳教学策略,一直是困扰一线教师的难题。选取2016年几个典型例题,采用教学片断呈现的方法,从五个角度阐述较为实用的教学策略。
As a commonly used method to express the relationship between two or more quantities, physical images are gradually favored by senior senior high school entrance examination candidates in recent years. However, for junior high school students who have just touched the mathematical function images and have poor abilities of abstraction, The image does have a great deal of difficulty. How to break through this difficult learning point and find the best teaching strategy has always been a problem for front-line teachers. Select some typical examples in 2016, using the method of teaching fragments presented from five perspectives to explain more practical teaching strategies.