初中物理教学的要求是“培养学生初步的观察、实验能力,初步分析、概括能力和应用物理知识解决简单问题的能力”。因此许多重要知识讲深了学生听不懂,讲浅了又难于见效,教学深度不好掌握。基于这一点,新编的初中物理教材增加了大量的演示实验和小“制作”,以便使抽象的物理概念形象化、具体化,给学生提供更多的观察机会,以获得丰富的感知 The requirement of junior high school physics teaching is “to train students' ability of preliminary observation, experiment, preliminary analysis, summarization ability and application of physical knowledge to solve simple problems.” Therefore, many important knowledge about students did not understand, speak shallow and difficult to effective, poor teaching depth mastery. Based on this, a large number of demonstration experiments and small “production” have been added to the newly edited junior high school physics textbook in order to visualize and substantiate abstract physical concepts and provide students with more observation opportunities to gain rich perceptions