一、说教材1.教材分析本节内容选自职业学校课程改革规划新教材,林德华老师主编的《汽车构造与拆装》(上册)一书中第二篇单元三的内容。本节教学内容是在学生对发动机的构造掌握的基础上,为进一步学习配气机构的组成及其作用而设计的实用性很强的项目内容,学习本节内容不仅能让学生掌握配气机构的构造,而且能锻炼学生的动手能力,极大地提高学生的学 First, the textbook 1. Textbook analysis This section is selected from the new curriculum reform curriculum of vocational schools, edited by Professor Lin Dehua “car construction and disassembly” (a) in the second unit content of the third. The content of this lesson is based on students’ understanding of the structure of the engine, to learn more about the composition of the valve body and its role in the design of highly practical project content, learning this section not only allows students to master the valve body The construction, but also to exercise the ability of students to improve students’ learning greatly