“教是为了不教”这句话中,“教”是前提、手段,“不教”是目的。叶老说得很明白:教师当然须教,而尤宜致力于导。而中职《机械制图》是机械专业的基础科目之一,后续所学的机械零件,机械原理车工工艺、磨工工艺、钳工工艺、、金属材料、电工学等多门学科中都要用到识图的内容。因此,提高《机械制图》课堂教学效益具有普遍意义。 “Teaching is to not teach ” This sentence, “teaching ” is the premise, means, “Do not teach ” is the purpose. Ye old enough to understand: of course teachers must teach, but especially should be committed to guide. The secondary “mechanical drawing” is one of the basic subjects of mechanical engineering, follow-up to learn mechanical parts, mechanical principles of automotive technology, grinding technology, fitter technology, metal materials, electrical engineering and other disciplines should be used The contents of the map. Therefore, improving the teaching effectiveness of “mechanical drawing” classroom has universal significance.