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【教材分析】本节内容包括了动能、势能、机械能三大知识点,其中动能,重力势能,弹性势能八年级已经接触过一些实例,现在是全面认识它们,能又是与功紧密联系的一个物理量,所以本节具有承上的作用。又由于它为认识内能打下了基础,故它同时也有启下的作用。【教学目标】1.知识与技能:(1)了解能量的初步概念,知道什么是动能、势能、机械能。(2)知道动能势能大小与哪些因素有关。2.方法与过程:(1)通过探究,了解动能、势能大小与哪些因素有关,并能解
[Textbook analysis] This section includes the kinetic energy, potential energy, mechanical energy three knowledge points, of which kinetic energy, gravity potential energy, elastic potential eighth grade have been exposed to some examples, and now it is a comprehensive understanding of them, but also is closely linked with the power of a Physical quantities, so this section has a bearing on the role. And because it laid the foundation for understanding Inner Mongolia, it also has a role to play. Teaching objectives 1. Knowledge and skills: (1) to understand the initial concept of energy, know what is kinetic energy, potential energy, mechanical energy. (2) Know the kinetic energy potential and what factors. 2 methods and processes: (1) through exploration, to understand the kinetic energy, potential energy and the size of the relevant factors, and can solve