Analysis and Thinking on the "2+3" Mode of Effective Teaching of Postgraduate CoursesTaking Agricultural Engineering Course "Agricultural System Engineering" as an Example

Course teaching is an important part of graduate training, how to improve teaching quality has been current hot issues．Taking an agricultural engineering course "Agricultural System Engineering" as an example, interactivity between teachers and students of the 2 main acts and related to effective teaching and learning of the 3 issues, such as “what to teach and learn, how to teach and learn, how to test and answer” were focused on．Finally, three changes of teaching model were proposed, that was paying attention from knowledge to emphasize knowledge and ability, teaching mode changing from “teach” to “learn”, and focusing on process of examination instead of results．