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控制变量法和转化法是实验探究中最常用的两种方法。控制变量法适用于探究一个因素与多个因素的关系,转化法适用于物理量或现象有时难以直接测量或感知时,通过转化的方法,将需要的物理量或现象向其他方面转化,易位思考,从而找到解决问题的捷径,简洁明了地解决问题。对于初中物理教材中的许多探究实验,常常将这两种方法结合起来进行实验设计和探究。
Control variables and transformation methods are the two most commonly used methods in experimental exploration. The control variable method is suitable for exploring the relationship between a factor and a number of factors. The conversion method is applicable to the physical quantity or phenomenon sometimes difficult to measure or perceive directly, and through the transformation method, the required physical quantity or phenomenon is transformed to other aspects, In order to find a shortcut to solve the problem, concise and clear solution to the problem. For many exploration experiments in junior high school physics textbooks, the two methods are often combined for experimental design and exploration.