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我国著名化学家和教育家傅鹰先生说过:“化学是实验的科学,只有实验才是最高法庭。”为此再怎么强调化学实验的重要性也不为过。而初中是学生学习化学的启蒙阶段,为此需要教师演示实验帮助学生获得生动丰富的直观性知识,这样才能吸引学生,发展并保持浓厚的学习兴趣。而教材上的有些实验由于所需的仪器多,操作复杂,现象不够明显,不够环保等,束缚和限制了老师的演示和学生的动手操作。为此笔者根据16年来
Professor Fu Ying, a famous chemist and educator in China, said: “Chemistry is the science of experiment, and only experiments are the supreme courts.” It is not too important to emphasize the importance of chemical experiments in this regard. The junior high school is the enlightenment phase for students to learn chemistry, for which teachers need to demonstrate experiments to help students gain a vivid rich intuitive knowledge, so as to attract students to develop and maintain a strong interest in learning. Some of the experimental teaching materials due to the required multi-instrument, complex operation, the phenomenon is not obvious enough, not environmentally friendly, binding and limit the teacher’s presentation and student hands-on operation. For this author based on 16 years