“活动探究感应电流的产生”是华师大版八年级科学下册探究电磁感应的一个重要实验,可以很好地培养学生的探究能力,特别是通过观察实验现象分析得出实验结论的能力.但按照教材设计的实验,探究内容不够完善,现象不明显,通过实验探究得出“闭合电路的一部分导体做切割磁感线运动时产生感应电流”的结论比较困难.笔者对实验做了细微改进,实验现象明显,实验效果显著,取得了较好的教学效果.1探究感应电流的产生——切割磁感线 “Activities to explore the generation of induced current ” is an important experiment to explore electromagnetic induction in the eighth grade of Science under the Normal University, which can well cultivate the students’ inquiry ability, especially through the observation of experimental phenomena to draw the conclusion of the experiment However, according to the experimental design of teaching materials, the content of inquiry is not perfect enough and the phenomenon is not obvious. It is difficult to conclude by experiment that “part of the closed circuit conductor produces induction current when cutting magnetic induction line” Made a slight improvement, the experimental phenomenon is obvious, the experimental effect is significant, and achieved good teaching results.1 explore the induction current generation - cutting magnetic induction line