物理学是一门以实验为基础的学科。在中学物理教学中,演示实验是学生对教学内容获得直观感性认识的重要手段,也是帮助学生建立概念和规律、理解和掌握物理知识的有效途径。实验的成功演示,不仅有利于激发学生学习的兴趣和求知欲望,而且还有利于加深学生对书本知识的理解和掌握,有利于学生创新思维的培养。实践表明,课堂演示实验在物理教学中发挥着重要作用。 Physics is an experiment-based discipline. In middle school physics teaching, demonstration experiment is an important way for students to acquire intuition and perceptual knowledge of teaching content. It is also an effective way to help students to establish concepts and laws and understand and master physical knowledge. The successful demonstration of the experiment is not only conducive to stimulate students’ interest in learning and curiosity, but also help to deepen the students’ understanding and mastery of the book knowledge, which is beneficial to the cultivation of students’ innovative thinking. Practice shows that classroom demonstration experiments play an important role in physics teaching.