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实验是学生学习化学、进行科学探究的重要途径。合理运用改进与创新实验是提高实验成功率和活跃学生思维的有效途径,是打造高效课堂和提高教学质量的重要手段,也是化学教师的必备素质。因为现行中学教材中部分实验存在有待改进之处,所以对粉尘爆炸、测定空气中的氧气含量等部分化学实验进行改进与创新很有必要。在实验改进中,应遵循科学性、安全性等原则。
Experiment is an important way for students to learn chemistry and conduct scientific inquiry. Rational use of improvement and innovation experiment is to improve the success rate of experiment and active student thinking is an effective way to create efficient classroom and improve teaching quality is an important means of chemical teachers is also an essential quality. Because some existing experiments in middle school textbooks have yet to be improved, it is necessary to improve and innovate some chemical experiments such as dust explosion, determination of oxygen content in air and so on. In the experimental improvement, we should follow the principles of science and safety.