论文部分内容阅读
几个字,一个词,一段顺口溜等都是课堂教学碰撞的火花,是师生智慧的结晶。笔者从二十余年中学化学教学中收集、总结了几则有效实例,以便广大师生交流和分享。例1.父亲电解水时,两极产生的气体分别是什么?负氢(与直流电源负极相连的电极上产生的是氢气)即与父亲同音。赡养父亲是我们中华民族的传统美德,试问谁会没有父亲?
A few words, a word, a period of jingle are the spark of classroom teaching collision, is the crystallization of wisdom of teachers and students. The author from more than 20 years of secondary chemistry teaching to collect, summed up a few effective examples, in order to exchange and share the majority of teachers and students. Example 1. When the father electrolysis of water, the two poles of the gas are what? Negative hydrogen (with the DC negative electrode connected to the electrode is generated on hydrogen) that is, with his father homonyms. To support my father is the traditional virtue of our Chinese nation. Who would have no father?