初中科学课是一门涉及许多自然科学知识的综合性学科,它以实验为基础,很多的科学概念和规律是通过实验来发现和探究,或用实验来进行验证。在初中科学的课堂教学中,演示实验起到了其他教学方法不可替代的作用。但一些传统的课堂演示实验有时因实验器材的缺乏、成功率不高、 The junior high school science class is a comprehensive subject involving many natural sciences. Based on experiments, many scientific concepts and laws are discovered and explored through experiments or experiments. In junior high school science classroom teaching, demonstration experiments play an irreplaceable role in other teaching methods. However, some traditional classroom demonstration experiments sometimes lack of experimental equipment, the success rate is not high,