关于初二物理学上册第二章第25节“压强”一课的教学,我在过去的几年当中,單从課本上的例子来讲压强的概念,往往使学生誤解为压强即系压力,把压强和压力的概念混为一談。我为着解决这个問题苦了数年,經过反复研究、实驗和观察,現在才制成一种“压强說明器”。利用这种仪器在课堂上进行演示,既能解决学生对压力和压强的区别问题,和加深学生 On the second day of physics on the second chapter of Section 25 “pressure” a class of teaching, in the past few years, I just from the example of textbooks on the concept of stress, often make students misunderstood as the pressure that is the Department of pressure, Mix the concepts of stress and stress. I have spent years trying to solve this problem. After repeated studies, experiments and observations, I now make a “stress statement.” The use of such instruments in the classroom to demonstrate, both to resolve the pressure on students and pressure differences, and deepen students