化学是一门以实验为基础的学科。演示实验是一种最有效的直观教学方法。我的感受是：即使讲千遍，不如做实验。要成功地做好演示实验，最起码要做到以下三点：一、要准备充分。首先要熟悉教材，熟悉实验内容和实验步骤，明确实验的目的，考虑如何引导学生进行观察，观察什么， Chemistry is an experiment-based discipline. Demonstration experiment is one of the most effective and intuitive teaching methods. My feeling is: Even if you speak a thousand times, it is better to do experiments. To successfully perform demonstration experiments, you must do at least the following three points: First, be prepared. First of all, we must be familiar with the teaching materials, be familiar with the experimental content and experimental procedures, clarify the purpose of the experiment, consider how to guide students to observe, observe what,