初中物理第一册第五章“活塞式抽水机和离心式水泵”一节,在讲吸取式抽水机的原理时,只靠课本上的图示进行讲解,学生往往不易真正理解和掌握。为了解决这个问题,我用一些简单的废料制作了一个“吸取式抽水机”模型,如图所示,效果很好,既 In the fifth chapter of the book “Piston Type Pumps and Centrifugal Pumps” in the fifth chapter of the junior middle school physics, when we talk about the principle of the suction type pump, we only rely on the illustrations in the textbook to explain it. Students are not always easy to understand and master. To solve this problem, I used a simple scrap to make a “pumping pump” model. As shown in the figure, it works well.