“双向”参与型物理教学 ,是以学生主体参与和教师主导参与为主线 ,以拓宽学生知识结构为基础 ,这就要求教师在各方面发挥主导作用 ,参与到学生学习活动中去 ,不断地激发学生的学习兴趣 .1　教师要导出特定的课堂情境在物理教学设计时教师应根据教材的特点把握能启发特定的课堂 The “two-way” participatory physics teaching is based on the participation of the main body of the students and the participation of teachers as the main line, and on the basis of broadening the students’ knowledge structure. This requires teachers to play a leading role in all aspects, participate in student learning activities, and continue to stimulate Students’ interest in learning.1 Teachers need to export certain classroom situations. Teachers should learn specific teaching methods according to the characteristics of the teaching materials.