物理学是一门实验科学,是整个自然科学和现代技术发展的基础,对促进社会的发展具有不可替代的作用.教师要教好物理就必须改变过去注重知识传授的倾向,加强实验是物理教育本质的自然回归,符合素质教育的理论和实践的要求.而课堂演示实验正是中学物理实验教学的重要组成部分,它不仅是建立物理概念和规律、理解和掌握物理知识不可缺少的环节,更是培养学生的观察能力、思维能力、探索精神以及良好的学习方法 Physics is an experimental science which is the basis of the entire natural science and the development of modern technology and plays an irreplaceable role in promoting the development of society.Teachers must change the tendency of focusing on knowledge imparting in order to teach physics well and strengthen the experiment as a physical education The nature of the natural regression, in line with the requirements of the theory and practice of quality education.The classroom demonstration experiment is an important part of high school physics experiment teaching, it is not only the establishment of physical concepts and laws, understanding and mastering the indispensable link of physical knowledge, more Is to develop students’ ability to observe, thinking skills, exploration and good learning methods