本节课是在学习了浮力知识的基础上,让学生利用不齐全的测量工具测物质密度,利用力学知识解决对生活中的实际问题,感受科学技术给人们生活带来的无限可能。本节课引用大量例题,每道例题后都有对应的实验,以实验引导学生自己动手、独立思考,从而解决问题。 This lesson is based on the study of buoyancy knowledge, allowing students to use incomplete measurement tools to measure the material density, the use of mechanical knowledge to solve the practical problems in life, feel the infinite possibilities that science and technology bring to people’s life. This lesson quotes a large number of examples. After each sample, there is a corresponding experiment to guide students to do their own experiments and think independently so as to solve the problem.