在与时俱进的教学中,学生的认识面越来越广,学生学习新知识前就已经见过传统教学中的引入实验了。本文以“光的折射”为例将传统引入情景与改进后的引入情景对比,并简述如何利用生活中常见材料搭建创新实验装置,并用案例来说明改进后的情景的有效性。 In the teaching of keeping pace with the times, the students’ understanding is more and more widespread. Before the students learn new knowledge, they have seen the introduction of experiments in traditional teaching. In this paper, we contrast the traditional introduction scenario with the improved introduction scenario by taking the refraction of light as an example, and briefly describe how to use the common materials in life to construct innovative experimental devices and illustrate the effectiveness of the improved scenario with examples.