一、教材分析(一)教材的地位和作用《电流》是初中物理第二册、第四章的第三节,本章知识是进一步学习初、高中电学概念和规律的必要的预备知识,本节电流的初步概念包括电流的形成和电流方向的规定,它既是电学中最基本的概念之一,也是本章教学的重点之一,是继续学习的基础知识.教材从学生熟悉的水流入手,通过类比分析得出电流的形成和电流的方向,从学生熟悉的干电池和小学自然课所学的电路出发,学习电源的作用能量转化 First, the analysis of teaching materials (A) the status and role of teaching materials “current” is the third chapter of junior high school physics, the fourth chapter, this chapter of knowledge is the necessary preliminary knowledge to further study the concept and the law of electricity in the beginning and high school, this section The preliminary concept of current includes the formation of current and the regulation of current direction. It is not only one of the most basic concepts in electricity, but also one of the focuses of teaching in this chapter. It is the basic knowledge of continuing learning. Teaching materials flow from the students’ familiar water into the hands, through analogy. Analysis of the formation of the current and the direction of the current, starting from the students’ familiar batteries and lessons learned in the natural class of primary school, learning the role of power conversion