一、教材分析今天我所展示的内容是新人教版九年级下册第二十九章第二节《三视图》的第二课时。本节知识是在学习了第一课时性质、概念规律的基础上结合具体问题并运用几何知识分析和解决实际问题,从而进一步培养学生空间想象力,提高对投影和视图的 First, the textbook analysis Today I show the contents of the New Year’s teaching version of the ninth grade second chapter twenty-ninth chapter second “three views” of the second class hour. This section of knowledge is based on the nature of the first class, the concept of the law based on the combination of specific problems and the use of geometric knowledge to analyze and solve practical problems, so as to further develop students’ space imagination and improve the projection and view