teaching auxiliary
4.In the studies of the nature of Management Course,this paper points out the advantages and disadvantages found in both classroom teaching and case teaching.Following this analysis,the author pinpoints the feasibility of game-like activity-based teaching approach.In the meantime,the article also attempts to probe into the role this specific strategy plays in the teaching of Management,its basic methods,as well as its defects and value as an auxiliary means in the teaching of Management.
7.The paper has discussed the different projection aspects of the ellipse gained by plane-obliquely truncated cone method in three basic projection planes of projection sys- tem:horizontal,vertical and side,and in an arbitrary-auxiliary projection plane in terms of both drawing and algebraic geometry,which gives theoretical evidence for the expansion of cone plane in teaching and actual production as well as for making expansion drawing of a cone plane by computer.

