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一、问题的提出在高中化学学习阶段元素周期律是教材编写的其中一条主线,以人教版为例,在必修一中学习了第一主族钠、第三主族铝、第八族元素铁等金属及其化合物性质,以及第四主族硅、第七主族氯、第六主族硫、第五主族氮等非金属及其化合物的性质,在必修一中挑选了几乎所有主族元素的代表元素,初始学生学习会感觉到学的东西繁杂,摸不着头脑,找不到其中的内在联系,只能机械记忆,时间一长,甚至会逐渐失去学习化学的兴趣。
First, the problem raised In the high school chemistry learning phase of the periodic law is one of the main textbook preparation, PEP, for example, compulsory one to learn the first main group of sodium, the third main group of aluminum, the eighth group of elements Iron and other metals and their compounds, as well as the fourth main group of silicon, the seventh main group of chlorine, the sixth main group of sulfur, the fifth main group of nitrogen and other non-metallic compounds and their nature, in compulsory one selected almost all the main Elements of the representative elements of the original students learn will feel the learning complex, scratching their heads, can not find the inner link, only mechanical memory, over time, and even gradually lose the interest of learning chemistry.