《高分子物理》是高分子专业本科生教学中的重难点。本文展示了橡胶网络理论的教学过程,介绍一种互动式教学方法。橡胶弹性理论中,通常用仿射变形来描述橡胶交联网的变形,即交联点按与橡胶试样的宏观变形相同的比例移动。但是,人们对于物理交联是否存在仍有争议,于是提出了交联网的相邻网链可以相互横切的幻象网络模型。通过让学生预先对仿射网络和幻象网络模型进行调研,然后进行课堂讲解的方法,让学生更深刻地掌握橡胶网络理论中的难点。这种方法让学生很好地理解知识点,具有良好的教学效果。 “Polymer Physics” is a major difficult point in polymer teaching for undergraduates. This article shows the teaching of rubber network theory and introduces an interactive teaching method. In rubber elasticity theory, the deformation of rubber cross-linked net is usually described by affine deformation, that is, the cross-linking point moves in the same proportion as the macroscopic deformation of the rubber sample. However, people are still controversial about the existence of physical cross-linking. Therefore, a phantom network model in which adjacent network chains of cross-linked networks can cross each other is proposed. By allowing students to pre-study affine network and phantom network model, and then explain the method in class, to enable students to grasp more difficult rubber network theory. This method allows students to better understand the knowledge points, with good teaching results.