在一堂《电磁感应现象的应用》课中,通过学生一个小小游戏的深入讨论,却意想不到地取得良好效果。本章的重难点在于理解:变化的电流产生变化的磁场,变化的磁场产生电场。在这堂课前,笔者也准备好了习题,但打算在进入枯燥的重复强调之前活跃一下气氛。于是笔者给学生们做了一个小游戏:千人震。它的实质是利用电磁感应现象,将一节干电池(1.5伏) In an “Induction of Electromagnetic Induction Phenomenon” class, an in-depth discussion of a small game by students has unexpectedly achieved good results. The important point in this chapter is to understand that changing currents produce a changing magnetic field and that changing magnetic fields generate an electric field. Before this class, the author also prepared the exercises, but intends to activate the atmosphere before going into boring repetitions. So I gave the students a little game: Thousands of people shocked. Its essence is the use of electromagnetic induction, a dry cell (1.5 V)