新课程改革要求初中物理教学不仅熟悉有关物理现象、规律,而且更注重学生动手能力的培养,因此教材中常安排一些小实验、小制作来达到激发学生学习 The new curriculum reform requires that junior middle school physics teaching is not only familiar with the relevant physical phenomena and laws, but also pays more attention to the cultivation of students’ hands-on abilities. Therefore, some small experiments and small productions are often arranged in the teaching materials to stimulate students to learn.