高端备课视域下“磁通量”的创新教学设计

Innovative Teaching Design on“Magnetic Flux”from the Perspective of High-End Lesson Preparation

在磁通量的教学中,现行高中物理教材未能阐明学习磁通量概念的必要性,没有彰显磁通量的本质和物理意义.为此,从物理概念教学的逻辑和学生的认知规律出发,先借助物理学史,从电与磁之间的联系引入,再通过“探究电磁感应现象”并运用科学方法展开,从而建立磁通量的概念.最后从磁通量的上位概念通量出发,诠释了磁通量的物理意义,从而为磁通量的教学提供了有益启示.

In the teaching of magnetic flux,the current physics textbooks of senior high school fail to clarify the necessity of learning the concept of magnetic flux,and do not show the essence and physical meaning of magnetic flux.Therefore,starting from the logic of physics concept teaching and students′cognitive law,this paper first introduces the relationship between electricity and magnetism with the help of the history of physics,and then establishes the concept of magnetic flux by“exploring the phenomenon of electromagnetic induction”and using scientific methods.Finally,starting from the upper concept flux of magnetic flux,the physical meaning of magnetic flux is explained,which provides useful enlightenment for the teaching of magnetic flux.