实验教学的特点是以学生为主,教师的讲解时间不应太长,但有些实验涉及的仪器多、复杂,特别是有的实验要求教师演示,这样如何在尽可能短的时间内给学生讲清楚仪器的构造、功能及使用方法等内容,提高时间利用率,把更多的时间留给学生的实验过程是摆在我们面前的一大难题.传统的方法是教师在讲台讲仪器的结构、面板、功 The characteristics of experimental teaching are student-oriented, and the teacher’s explanation time should not be too long. However, some of the instruments involved in the experiment are numerous and complicated. In particular, some experiments require teachers to demonstrate how to tell the students in the shortest possible time. It is a big problem for us to clearly understand the structure, functions, and methods of use of the instrument, improve the time utilization rate, and leave more time for the student’s experimental process. The traditional method is to teach the structure of the instrument at the podium. Panel, work