自制教具具有废物利用、提高动手能力等作用,是提高师生综合素质的好方法。为提高浮力实验的演示效果,更好地体现物理学科的科学性,笔者自制了一款浮力产生原因演示仪,受到了师生的好评。一、浮力产生原因演示仪装置图浮力产生原因演示仪装置图见图1。二、浮力产生原因演示仪的特点及用途1.特点。操作简便,材料易得;现象直观,效果明 Homemade teaching aids with waste utilization, improve the ability of hands and so on, is to improve the overall quality of teachers and students a good way. In order to improve the demonstration effect of buoyancy experiment and to better reflect the science of physics, the author made a demonstration instrument of buoyancy cause, which was praised by teachers and students. First, the cause of buoyancy Demonstrator installation diagram Buoyancy causes Demonstrator installation diagram shown in Figure 1. Second, the cause of buoyancy Demonstrator characteristics and uses 1. Features. Easy to operate, easy to get the material; the phenomenon is intuitive and effective