远距离输电课本上讲得很简单,但这一章涉及的知识点却很多,几乎包含了电学前面的大部分知识.而学校又没有成套的实验仪器,要讲好该内容,不借助一定的演示实验不仅教师难讲,学生也难于理解和接受.因此,笔者就摸索设计了一个远距离输电示教板,现介绍如下.1材料准备①一块120cm×5 The long-distance transmission textbooks are very simple, but this chapter covers a lot of knowledge, including most of the knowledge in front of the electricity. And the school does not have a set of experimental instruments, to speak well of the content, without resorting to certain The demonstration experiment is not only difficult for teachers to teach, but also difficult for students to understand and accept. Therefore, the author explored and designed a long-distance transmission teaching board, which is presented as follows. 1 Material preparation 1 piece 120cm×5