我初教物理的时候遇到了一件尴尬的事.那年市里组织业务考试,我刚教物理,就遇到考控制变量法,那时我根本就不知道什么是控制变量法,我没有办法,只好冲着这几个字发呆.我就一个字、一个词地看,控制—变量—法,是不是在实验的时候控制某些量不变的方法?就这样我琢磨了一会儿,写下 When I first taught physics, I encountered an embarrassing thing. In that year, when I organized the business examination and I just taught physics, I met the test control variable method. At that time, I didn’t know what the control variable method was. I did not The method had to be dazed at these words. I looked at the word, the word, and the control-variable-method, was it not in the experiment to control certain quantities of the same method? In this way I pondered for a while and wrote under