《自然》第三册第十三课《摩擦起电》一节,在让学生认识和学习了一种使物体带电的方法后,安排了“做游戏”的内容——会“飞”的鱼和魔术表演,以激发学生的学习兴趣,提高学生的观察能力,为学生研究物体带电后能吸引轻小的物体提供事实。那么,怎样才能增强实验效果,让鱼“飞”得更好呢?要解决这个问题,首先要知道这个演示实验的作法和鱼会“飞”的原因。 In Nature, Volume III, Lesson 13, “Frictional electrification”, after having students recognize and learn a way to charge an object, a “play-making” content was created - a fish that would “fly” And magic show to stimulate students 'interest in learning, improve students' ability to observe, and provide students with the idea of ​​attracting light objects when they study charged objects. So, how can we enhance the experimental effect so that the fish can fly better? To solve this problem, we must first understand the demonstration experiment and the reasons why the fish will fly.