提高学生的知识和能力素质,是各科教学的宗旨,围绕这一宗旨,几年来我们在物理教学中,采取了单元教学和读做讲练相结合的教学方式。所谓单元教学,是为了达到教学目的,运用系统思想对整个一章教材的教学活动进行统筹组织,以求整体效果最佳。而具体教学手段的选用,则不拘程式,什么方法对达到教学目的适宜,就用什么方法,以求把目的落到实处。以《直流电》(即普通中学教材的《稳恒电流》)一章为例,本章数学内容如章首“引言”所指出,是:“电路基本知识”。“基本”二字,有两层含义:一是各类电力、电子线路系统通常均可抽象为含电流、负载、开关和连接 Improving students’ knowledge and ability is the purpose of teaching in each subject. For this purpose, in the past few years we have adopted a combination of unit teaching and reading as a teaching method. The so-called unit teaching is to achieve the purpose of teaching, using systematic thinking to organize the whole teaching activities of a chapter of teaching materials in order to achieve the best overall effect. The choice of specific teaching methods is not based on procedures, and what methods are appropriate to achieve the purpose of teaching, what methods should be used in order to achieve the purpose. Take the chapter “DC Power” (ie, “Constant Current” in an ordinary high school textbook) as an example. The mathematics content of this chapter, as pointed out by the first chapter “Introduction”, is: “Basic Knowledge of Circuits”. The word “basic” has two meanings: First, all types of power and electronic circuit systems can generally be abstracted to include current, load, switch, and connection.