去年笔者先后在几个中学里試教了几节化学课。通过试教,有以下几点体会: 一、理論恰当地联系实际有利于巩固基本知識 讲授化学基本知識时,适当联系自然界、日常生活和工农业生产上有关的化学原理,可以巩固和加深学生对理論、元素和化合物知識的理解。例如,在“电解貭的电离”一章里,讲过了电解貭的电 Last year, I experimented with several chemistry classes in several high schools. Through trial teaching, the following experience: First, the theory properly linked to the actual situation conducive to the consolidation of basic knowledge Basic knowledge of chemistry, the proper contact with nature, daily life and industrial and agricultural production on the principles of chemistry, you can consolidate and deepen the students Theoretical, elemental and compound knowledge. For example, in the “Electrolytic ionization” chapter, talked about electrolysis electricity