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初中物理第二册,有规定的光学,热学和电学的小实验十三个,还有在练习题中出现的小实验若干,笔者在初三上半学期的教学中,共组织学生做了十个。其中教材上规定的有小孔成像,双金属片自动控制电路,热风轮,练习题中出现的有摩擦起电现象,自制简单的验电器以及根据教材要求自己另外安排做的潜望镜等。实践结果表明,收到了良好的效果。笔者体会到小实验的教学还有以下几点较突出的作用。一、物理小实验的教学进一步调动了学生学习物理的积极性和主动性。初中学生怕学物理,又爱学物理。他们怕的是物理概念抽象,怕的是将物理问题抽象成数学问题进
The second volume of junior middle school physics, there are 13 small experiments of prescribed optics, thermals, and electricity, as well as some small experiments appearing in the exercises. In the third half of the semester, the author organized a total of ten students. One. Among them, there are holes for imaging, bimetal automatic control circuits, hot air wheels, frictional electrification phenomenon in the exercises, self-made simple electroscopes and periscopes that are required to be arranged according to the teaching materials. The practical results show that it has received good results. The author learned that the teaching of small experiments has the following more prominent roles. First, the teaching of physical experiments further mobilized the enthusiasm and initiative of students in learning physics. Junior high school students are afraid of learning physics and love learning physics. What they are afraid of is the abstraction of the concept of physics. The fear is to abstract the physics into mathematical problems.