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在初中物理教学中,滑动变阻器的教学是一个既是难点也是重点的课题,在初中物理课程安排中扮演着重要的角色。对历年来中考试题的研究,无论在客观题、主观题还是在实验题中,都能看到它的存在,滑动变阻器是电学实验中的一个重要器材元件,它可以通过移动滑片的位置来改变自身的电阻,从而起到控制电路的作用。在初中教学中,对滑动变阻器考查的主要内容包括:在电路中的工作原理、作用、连接方式、限流作用和电阻的使用与选择。很多学生往往由于对滑动变阻器基础知识掌握不足,学习不系统不扎实,在考试中很容易得不上分。如何让学生将滑动变阻器的课程内容掌握扎实牢固,需要初中物理老师在教学方式和内容上进行深层次的探究。
In junior high school physics teaching, the teaching of sliding rheostat is a difficult and important subject, and plays an important role in the junior middle school physics curriculum. The study of middle school exam questions over the years, both in objective questions, subjective questions or in the experimental questions, can see its existence, sliding rheostat is an important component of electrical experiments, which can be moved by the slide position Change their own resistance, which play a role in controlling the circuit. In junior high school teaching, the main contents of the sliding rheostat test include: the working principle of the circuit, the role of connection, the role of current limiting and the use and choice of resistance. Many students are often due to lack of basic knowledge of sliding rheostat, learning system is not solid, it is easy to get in the exam points. How to make students grasp the contents of sliding rheostat solid and solid, requiring junior high school physics teachers in the teaching methods and content for in-depth exploration.