如何引导学生探索成功呢？教改实践证明电教媒体的正确应用是重要因素之一。我们的电教媒体主要是录像演示实验。本文着重从录像演示实验（以下简称“演示实验”）的设计和使用两方面谈谈如何使学生探索成功。总的讲，演示实验的设计和使用只有在切合学生的心理发展水平时，才 How to guide students to explore success? The teaching reform practice has proved that the correct application of audio-visual media is one of the important factors. Our audio-visual media are mainly video demonstration experiments. This article focuses on how to enable students to explore success from the aspects of the design and use of video demonstration experiments (hereinafter referred to as “demonstration experiments”). In general, the design and use of demonstration experiments are only relevant to students’ psychological development.