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三、抓住关键词语去猜想方法解读:即找出与研究对象有关的定义中的关键词语猜想,或找出问题情境中的一些关键要素猜想。课内外运用:在探究物体动能的大小与哪些因素有关时,我们首先根据动能的定义,筛选出关键词:物体、运动,然后根据关键词对各因素进行猜想。由物体可以猜想到:密度、体积、质量;由运动可以猜想到:速度。进行分析,筛选合理因素,再没计实验进行验证。在探究滑动摩擦力的大小与什么有关时,我们围绕滑动摩擦力产生的原因(压力和相对
Third, to grasp the key words to guess the method of interpretation: to find out the key words conjecture in the definition of the research object, or to identify some key elements of the problem scenario conjecture. In-class and out-of-class use: When we investigate the size of an object’s kinetic energy, we first select key words: objects and movements based on the definition of kinetic energy, and then guess the factors based on keywords. From the object can guess: density, volume, quality; by exercise can guess: speed. Perform analysis, screen for reasonable factors, and do not verify the experiment. When we investigate the size of the sliding friction force, we have to think about the causes of the sliding friction force (pressure and relative