Abstract: With the deepening of teaching reform, in the professional class hours less, more content, must constantly improve the classroome efficiency under the premise of each lesson's high quality and efficiency is particularly important. In this paper, the engineering cost the teaching process, for example to illustrate the "345 overall teaching quality and efficient class structure” in improving and some new methods to improve the quality of teaching. This paper introduces the "345 overall teaching quality and efficient class structure” of principles and processes; second proposed dominated by case within the framework, using the idea of "task-driven" teaching method.

Key words: font-family: "Times New Roman", mso-bidi-font-size: 12.0pt, mso-fareast-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">engineering cost, course teaching, quality of teaching