Abstract: The learning contents of intersecting lines are the important and difficult parts in the course of
the graphics. The theoretical teaching method for this learning contents was the main and the single
teaching model for many years. For improving the current teaching situation, a practical teaching method
improving students’ autonomous learning ability for intersecting lines learning is presented in this paper.
On the basis of using the self-developed instrument for drawing intersecting lines, practical teaching
program, plans and learning evaluation system are made for this teaching method. The preliminary
implementation of this practical teaching method in our school shows that the students’ learning
enthusiasm and interest in learning this difficult content are inspired greatly. Because of the choice of the
exercises and the practical operation by the students themselves, the students can understand the contents
more easily and have more impressive for them.

Key words: course of graphics, intersecting line, practical teaching, autonomous learning