分子运动论是用来解释宏观热现象的基本微观理论。其中,分子间作用力的规律是分子运动论的重要内容。由于分子微小,不能直接观察到,学生对分子作用力与距离的关系往往感到抽象难懂。为了帮助学生理解,笔者设计制作了一个说明分子间相互作用力的模拟演具。实践表明,利用它可以较准确地模拟分子间的作用力与距离的关系。并且取材容易、制作简单、操作方便、效果明显。在突破分子作用力这一教学难点时起了关键性的作用。现介绍如下: 一、制作要点1、螺线管AB和CD:用马粪纸按图1 Molecular movement theory is used to explain the basic microscopic theory of macroscopic thermal phenomena. Among them, the law of intermolecular forces is an important part of molecular movement theory. Because of the small size of the molecule, it cannot be observed directly that the relationship between the student’s force and distance is often abstract and difficult to understand. In order to help students understand, I designed and produced a simulation tool that explains the interaction forces between molecules. Practice shows that using it can more accurately simulate the relationship between force and distance between molecules. And easy to draw, simple production, easy operation, the effect is obvious. It has played a key role in breaking through the teaching difficulties of molecular forces. Are introduced as follows: First, the production of points 1, solenoid AB and CD: using horse manure paper according to Figure 1