Teaching of engineering drawing to make constructivism instruction have very good realistic meanings, receive the result of twice with half the effort.
用建构主义指导工程制图的教学具有很好的现实意义，可收到事半功倍的效果。
Teachers should take different measures according to different questions, make the teaching vivid and interesting and will achieve good teaching result.
教师教学时应针对不同的问题采用不同的教学方法，使数学教学形象化、趣味化，这样将会收到良好的教学效果。
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