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演示实验,在化学课的课堂教学上,占着很重要的位置。如果演示能正确地完成,可以使学生获得正确而深刻的印象,容易掌握而牢记着科学知识。现在各中学所采用的高级中学化学课本,其中有许多演示实验,在演示时需特别注意的。这次我们在我校师资训练部的教学工作中,课前准备时,对这些实验,曾经集中力量,一一加以研究和试验,大部分已得到掌握实验的技术,能保证在课堂教学时,有把握地演示出满意的结果。现在把几个比较普通而重要的写出来,备教学时的参考。
Demonstration experiment, in chemistry class classroom teaching, occupy a very important position. If the presentation can be done correctly, students can get the right and deep impression, easy to grasp and keep in mind the scientific knowledge. Now used by high schools in all secondary school chemistry textbooks, of which there are many demonstration experiments, the need to pay special attention to the presentation. This time we teach teaching in our school work, pre-class preparation, these experiments, have focused their efforts to study and test one by one, most of them have been mastering the experimental techniques to ensure that in the classroom teaching, Demonstrate a satisfactory outcome with confidence. Now write a few more ordinary and important, prepared for teaching reference.