本文叙述了在教学中以口香糖纸在导电的过程中发生的系列现象为主线,激发学生对电流热效应的兴趣,并引导学生猜想影响电流热效应的因素。采用自制的“影响电流热效应因素”教具,效果明显直观,在较短的时间内,便会产生实验需要达到的效果。 This article describes a series of phenomena that occur during the conduction of chewing gum paper in teaching as the main line to stimulate students’ interest in current thermal effects and to guide students to guess the factors that affect current thermal effects. The use of self-made “affecting the current thermal effects ” teaching aids, the effect is obvious and intuitive, in a short period of time, will produce experiments to achieve the desired effect.