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“浮力”这一章,在初中物理学中占有重要地位:它除了包括浮力、阿基米德定律、浮沉原理等重要基础知识外,还牵涉到重量、比重、液体压强、压力以及二力平衡等重要基础知识。知识的综合性和实用性都很强,难度也较大。而且,本章知识内容在高中不再学习,因此在初中毕业总复习中,一定要帮助学生认真搞好这部分知识的复习,使学生对基本概念掌握得比较牢固,并提高综合分析问题和解决问题的能力。针对学生的学习情况,我们是从以下三个方面进行复习的。
The “buoyancy” chapter plays an important role in junior physics. In addition to its important basic knowledge of buoyancy, Archimedes’s law, and float-sink theory, it also involves weight, proportion, liquid pressure, pressure, and balance between two forces. And other important basic knowledge. The comprehensive and practical knowledge is very strong and difficult. Moreover, the knowledge content of this chapter is no longer studied in high school, so in the final review of junior high school graduation, we must help students to seriously review this part of the knowledge, so that students grasp the basic concept is more solid, and improve the comprehensive analysis of problems and solve problems Ability. According to the student’s learning situation, we review from the following three aspects.