电阻的概念是从实验中总结而得出的,同学们容易理解,印象深刻。教师可以在教学中运用电阻概念启发学生的思维,使学生对电学知识的学习、理解和记忆起到事半功倍的效果。一、以电阻为引导,驾驭电学知识,构建知识体系我校学生知识基础薄弱,普遍感到电学知识难学、难懂。通过对8个初二班进行调查,我们发现大部分学生对于刚开始的几节内容比较好理解,可学到第七 The concept of resistance is derived from experiments and students are easy to understand and impressive. Teachers can use the concept of resistance in teaching to inspire students’ thinking, so that students can have a multiplier effect on learning, understanding and memory of electrical knowledge. First, using resistance as a guide, driving electrical knowledge and building a knowledge system Our students have a weak knowledge base and generally feel that electrical knowledge is difficult to learn and difficult to understand. By investigating 8 junior classes, we found that most of the students had better understanding of the first few sections and learned the seventh