阿基米德定律是初中物理中一个非常重要的物理规律。现就此节的教学谈一点自己的做法和体会。一、新课的引入通过复习上节内容,让学生说出求浮力的两种方法。即:①利用弹簧秤法。②求上下表面压力差法。然后指出两种方法的局限性,例如,一木块浮在水面上,当用手再往下按住时, Archimedes’s law is a very important physical law in junior high school physics. Let me talk about my own practice and experience in this section of the teaching. First, the introduction of the new class By reviewing the contents of the previous section, let students say two ways to find buoyancy. That is: 1 using spring scale method. 2 Find the upper and lower surface pressure difference method. Then point out the limitations of the two methods. For example, if a piece of wood floats on the water, hold it down and hold it down.