学生学习物理知识,需要从生活实际出发,以生活中的实例为基础构建物理模型,进而理解物理概念与规律。掌握物理建模的学习方法,对于学生掌握物理规律,应用物理知识有着重要的作用,也更容易让学生将物理知识与生活实际联系在一起。生活中有许多利用杠杆原理的工具或者器材,学生对于这些工具和器材非常熟悉,但却不知道其所蕴 Students learn physics knowledge, need to proceed from the reality of life, based on the examples in life to build a physical model, and then understand the physical concepts and laws. Master the physical modeling of learning methods, for students to master the laws of physics, the application of physical knowledge has an important role, but also easier for students to the physical knowledge and life are actually linked together. There are many tools or equipment in the life that use the principle of leverage. Students are very familiar with these tools and equipment, but they do not know the meaning