上好实验课,不仅要使学生明确实验目的、理解实验原理、了解方法步骤和注意事项,并且要充分调动学生动手(培养学生的实验操作能力)、动眼(培养学生的观察能力)、动脑(培养学生的思维能力).其中培养学生的思维能力, 包括分析、对比、综合、抽象、判断、推理等尤为重要.而培养思维能力的最好办法莫过于在实验过程中多设几个“为什么”了. Good experimental class should not only enable students to clarify the purpose of experiments, understand experimental principles, understand method steps and precautions, but also fully mobilize students’ hands-on skills (cultivating students’ experimental abilities), eye movements (cultivating students’ observation abilities), and brain stimulation. (Cultivate students’ thinking ability). It is particularly important to train students’ thinking ability, including analysis, comparison, synthesis, abstraction, judgment, and reasoning. The best way to cultivate thinking ability is to set several more in the experiment process. Why is it?