Abstract: To solve the problem that the classroom teaching of mechanical drawing lacks innovation-oriented practical training, authors introduce small research projects into the classroom teaching. Four small open research projects are designed in the chapters of truncation and intersection, which asks students to propose their research ideas independently and to complete theoretical analysis, model making and defense, etc. The design principles, implementation and assessment of the research projects are further explored. The implementation of research projects not only improves the hands-on ability of students, but also enhances the innovation ability of students.

Key words: engineering graphics, research projects, practical teaching, innovation ability