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中学教材中有的实验操作方法在实际应用中存在不足。笔者对三个实验进行了创新改进,改进之后的方法具有操作简单、实验现象更明显等优点,在吸引学生注意力,培养学生兴趣,锻炼学生的实验操作技能等方面起到了更好的作用。
There are some shortcomings in the practical application of experimental methods in middle school textbooks. The author made innovations on the three experiments. The improved method has the advantages of simple operation and more obvious experimental phenomena, which play a better role in attracting students’ attention, cultivating students’ interest and training students’ experimental skills.