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一、教学目标1.通过实例分析,认识到运动的物体能做功,具有动能.2.通过探究,知道动能的大小与物体的质量和运动速度有关,并能解释简单的现象.3.通过探究,知道弹性势能和重力势能的概念和决定因素,并解释简单的现象.4.通过观察分析,知道动能与势势的相互转化及规律.二、教学重难点动能、势能及其决定因素;动能与势能的相互转化.
First, the teaching objectives 1. Through case analysis, recognize that the moving object can do work, with kinetic energy .2. By exploring, we know that the size of kinetic energy and the object’s mass and speed of movement, and can explain the simple phenomenon .3. , Know the concept of elastic potential energy and gravity potential energy and the determinants, and explain the simple phenomenon .4 through the observation and analysis, know the kinetic energy and potential mutual transformation and law .In two, the teaching of heavy kinetic energy, potential energy and its determinants; kinetic energy Mutual transformation with potential energy.