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演示实验是化学教学中最生动、最有效的直观手段，它对于全面培养学生的科学素质具有非常重要的作用。因此，如何提高演示实验教学的效益，是值得深入研究的课题。本文拟从心理学的角度对演示实验教学中学生的兴趣变化、影响学生观察效果的因素以及观察和思维的紧密结合等问题?
Demonstration experiment is the most vivid and effective visual method in chemistry teaching. It plays an important role in fully cultivating the scientific quality of students. Therefore, how to improve the effectiveness of demonstration experiment teaching is worth studying in depth. This article from the perspective of psychology to demonstrate the changes in the students’ interest in experimental teaching, the factors that affect the students’ observation effects, and the close integration of observation and thinking?