In this paper.‘jingzi' graph changing is considered as a teach case by raising the problem, finding the solution, then extracting the nove command. the orders of two-dimensional graphic editing in Auto CAD are clear stated such as pruning, copy, chamfer angle, round off, excursion,stretching, proportional zoom, movement, whirl, annular array, matrix array, mirror image, etc. The learning of the orders of two-dimensional graphic editing in Auto CAD can be achieved in an active class mood by relaxing and interesting discussions about graph changing problem.%本文通过以"井字"图形变化为主线,在图形变化中以问题的提出,寻求解决方法为突破口,以达到新命令的引出与学习.将AutoCAD两维图形编辑命令讲清、讲透,在宽松愉快而有兴趣的图形变化和问题讨论中,在活跃的课堂气氛中完成AutoCAD两维图形编辑命令的学习.
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