实验是物理教学中最常用、最直观的教学手段,而实验的可见度,特别是演示实验的可见度,直接关系着课堂教学的成败.但中学物理实验室现有的许多实验仪器,主要是用于学生的分组实验,如果用于演示实验,学生很难看清楚实验器材的结构、实验的操作过程和实验现象,特别是坐在后排的学 Experiments are the most commonly used and most intuitive teaching methods in physics teaching, and the visibility of experiments, especially the visibility of demonstration experiments, is directly related to the success or failure of classroom teaching.But many experimental instruments existing in Middle School Physics Laboratory are mainly used for Student grouping experiments, if used to demonstrate experiments, students can hardly see the structure of experimental equipment, experimental operation and experimental phenomena, especially in the back of the study