一、教材分析本课是在学生认识了浮力的基础知识之后,继续学习有关物体的浮沉条件和浮力应用的知识。教学内容分两部分,第一部分探究分析物体的浮沉条件,第二部分了解浮力的应用,并用到了前面学习的力、二力平衡、力和运动的关系等有关知识,是一节综合性很强的课程。 First, the textbook analysis This lesson is the students understand the basic knowledge of buoyancy, continue to learn about the objects of floating conditions and buoyancy application of knowledge. The teaching content is divided into two parts. The first part is to explore and analyze the object’s floating and sinking conditions. The second part is to understand the application of buoyancy and to apply the knowledge of the previous learning force, the second force balance and the relationship between force and movement. Course.