关键词: 网络教学, 同步交互, 异步交互

Abstract: This article analyzes the importance of the interaction in the web - based instruction platform and states its basic theory. By comparing the status quo of the interactive module on the web - based intruction platformwith others ,it put forword the design principles of the interactive module. Based on these principles , the article elaborates the characteristic functions for realizing the interaction module with the actual project as an instance.

Key words: web-basedinstruction, synchronousinteraction, asynchronousinteraction