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对比法是根据一定的标准对某事物或现象在不同情况下的不同表现进行对比的一种研究问题的方法．对比的过程能使人们清晰辨别事物或现象之间的联系与区别,从而认识到事物的本质,便于应用于物理知识．如速度、惯性、压强、比热容等概念,均是对比法引出的,现就对比法在初中物理概念教学中的应用,谈点粗浅见解．
Contrast method is a method to study the problem by contrasting different performance of something or phenomenon in different situations according to certain criteria. The process of comparison enables people to clearly identify the connections and differences between things or phenomena, thereby recognizing the nature of things and facilitating the application of physics knowledge. Concepts such as speed, inertia, pressure, specific heat capacity, etc., are all derived from the contrast method. Now we discuss the application of the contrast method in junior high school physics concepts teaching.