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初中化学是化学的入门阶段,而绪言课又是“开篇课”。教师和学生双方对第一节课都比较重视。学生是以极大的好奇心和求索的心理听这节课的,而教师也是满腔热情充满信心教这节课,力图“打响这第一炮”。但是稍有经验的老师都会感到讲好绪言课并不是件容易的事。绪言课一般有两大部分,一是介绍本书的主皆;也就是化学研究的目的和对象。二是初步简介全书的主要内容,使学习者有一个大概的了解。而现行教材初中化学绪言的内容却是很多的:(1)物质的变化;(2)物质的性质;(3)我国古代在化学方面的成就;(4)化学跟社会主义四个现代
Junior high school chemistry is the beginning stage of chemistry, and the preface class is “open class”. Both teachers and students pay more attention to the first class. The students listened to this class with great curiosity and searching psychology, and the teachers were also full of enthusiasm and full of confidence to teach this lesson and try to “fire the first shot”. However, teachers with a little experience will feel that it is not easy to speak well. There are two main parts in the introduction class. The first is the introduction of the book; it is the purpose and object of chemical research. The second is to briefly introduce the main contents of the book so that learners have a general understanding. The contents of the current textbook junior high school chemistry are many: (1) changes in the material; (2) the nature of the material; (3) the achievements of ancient China in chemistry; (4) the four modernizations of chemistry and socialism.