现代教学论认为 ,教师、学生、教学媒体以及联系三者的教学活动是教育系统的基本要素。教学活动必须通过学生的积极主动性才能达到预期效果。诸多化学知识、概念、理论都是在化学实验的基础上总结出来的。所以引导和指导学生参与化学实验是搞好化学实验教学的重要保证。这也是? Modern teaching theory believes that teachers, students, teaching media, and the teaching activities of the three are the basic elements of the education system. Teaching activities must pass the students’ initiative to achieve the desired results. Many chemical knowledge, concepts, and theories are summed up on the basis of chemical experiments. Therefore, guiding and guiding students to participate in chemical experiments is an important guarantee for doing a good job in chemistry experiment teaching. This is also?