《机械制图》课程要求学生具备较强的空间思维能力,推理能力,动手能力,对于起点较低的职中学生,学好这门课程有一定的难度。在教学中,结合理论知识和学生实际情况,多做演示实验和分组实验,教学效果是比较好的。 1 多做演示实验 职业中学高一级的学生,因尚未学习立体几何,对学习制图,难度较大。讲到投影规律、组合体三视图时有一部分学生难以理解。在讲授这些内容的过程中,充分利用演示实验,为教学提供很大的方便。如利用幻灯机,太阳光演示点、线、面投影规律,视图、轴测图形成 Mechanical drawing course requires students to have strong thinking ability, reasoning ability and practical ability. For the vocational school students with lower starting point, it is difficult to learn the course well. In teaching, combined with theoretical knowledge and the actual situation of students, to do more demonstration and group experiments, the teaching effect is better. 1 more to do experimental high school vocational high school students, because they have not yet learned three-dimensional geometry, learning cartography, more difficult. Speaking of the law of projection, the combination of three views when some students find it difficult to understand. In the process of teaching these contents, make full use of demonstration experiments, to provide a great convenience for teaching. Such as the use of slide projector, sun light point, line, surface projection law, view, axonography