Abstract: This paper elaborates the constructivism learning theory and some new teaching methods under its guidance. The integration of two- and three-dimension teaching of engineering graphics is taken as a breach of teaching reform. The teaching practice of engineering graphics in application of this model proves to be successful and achieves good effect. The summarization of the general practice program under the guidance of constructivism learning theory offers a new perspective of applying the theory to conduct teaching reform.

Key words: constructivism, engineering graphics, teaching reform