一、教材分析教材突出课标的科学探究的新理念,从学生的认知特点和培养学生能力的高度出发,将浮力的概念、浮力产生的原因、浮力大小的测量三个知识点都设计为由实验探究得出结论,让学生体验探究的过程,培养学生的观察能力、操作能力、设计实验能力、运用科学研究方法等各种探究能力,进一步培养学生对物理的兴趣。浮力产生的原因是本节的难点,要用二力平衡和液体内部压 First, textbook analysis textbook highlights the scientific concept of the new concept of curriculum standards, from the cognitive characteristics of students and students to develop a high degree of ability, the concept of buoyancy, the reasons for the buoyancy, buoyancy measurement of three knowledge points are designed from The experimental exploration leads to the conclusion that students should be encouraged to explore the process of inquiry, develop students ’abilities of observation, operation, design and experiment, and use of various research skills to further develop students’ interest in physics. Buoyancy is caused by the difficulty of this section, to use two balance and liquid pressure inside