短路电路的教学是初中物理电学的一个重点和难点。随着当今家用电器的广泛普及,让学生弄清短路概念显得就更为重要。笔者在多年的教学实践中,按以下几步,逐一阐明这个问题,收到良好效果。 1 从“易发事件”的错误分析中,列出“短路”的定义在第七章,学生动手做“组成串、并联电路的实验”时,往往会把实物连结成如图1、图2错误电路。 The teaching of short-circuit circuits is a key and difficult point of junior high school physics. With the widespread popularity of home appliances today, it is even more important for students to understand the short circuit concept. In the years of teaching practice, the author clarified this issue one by one in the following steps and received good results. 1 From the error analysis of “prone events”, the definition of “short-circuit” is listed in Chapter 7. When students start hands-on “experiment of component strings and parallel circuits”, they often link physical objects into one as shown in Figure 1 and Figure 2 Error circuit.