Abstract: Improving quality of classroom teaching and avoid students wasted time has always been the ideal pursuit. Effective teaching is not only the teaching behavior, but also the learning behavior of students. This paper analyzes the situation and teaching problem of the current classroom teaching in colleges, and introduces a concept of four-element teaching mode into the Mechanical Drawing course. The power or responsibility of teachers and students are redistributed by using of intensive lecture, answering questions, self-internalization after class, and peer interaction of students. Practice shows that four-element teaching can effectively realize teacher-student interaction, peer interaction and collaborative learning, and promote the student-centered education and innovative teaching mode.

Key words: Four-element teaching mode, Mechanical Drawing, Teaching reform, Professional certification, Teacher-student interaction, Teaching feedback