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一、背景本节是学生在中学阶段(高一年级)第一次接触有机物中代表物的结构和性质的有关内容,学生对教材的内容是比较陌生的。之前初三的有关甲烷的内容只是简单的了解,基本没有形成系统的有机物的学习方法,因此在教学中要特别注意引导学生的思维,形成学习有机物的基本方法,为高二的选修打下基础。本节内容教学目标有3个:1.通过确定甲烷分子式的教学,使学生初步掌握确定气态烃分子式的方法。
First, the background This section is the students in the high school stage (first year) for the first time exposed to the structure and nature of the representatives of organic content, students are relatively unfamiliar with the content of the textbook. The content of methane on the third day before was only a simple comprehension, and basically did not form a systematic study method of organic matter. Therefore, special attention should be given to guiding students’ thinking and forming the basic method for learning organic matter in teaching so as to lay the foundation for the sophomore elective. In this section, there are three teaching objectives: 1. To help students master the method of determining the molecular formula of gaseous hydrocarbons by defining the teaching of methane molecules.