初中物理教材中介绍了电流表、温度计等多种常用测量仪器的使用方法,要求学生了解它们的名称,认识它们的构造、用途,能熟练、正确地使用这些仪器.此类实验的常规教学法是:先让学生自学教材,然后在教师的指导下反复操练,培养实验技能.但学生往往由于不理解操作规则,而不能 Junior high school physics textbooks introduced the use of ammeter, thermometer and other commonly used measuring instruments, require students to understand their name, understanding of their structure, use, skilled, correct use of these instruments. The conventional teaching method is : Let students self-learning materials, and then under the guidance of the teacher repeatedly drills to develop experimental skills.But often because students do not understand the rules of operation, not