基于网络的对话式教学交互及其工具运用

对话式教学交互关注学生在学习过程中的主体地位，旨在通过交流合作促进知识的建构。人们早在上世纪中期就将其思想应用于计算机辅助教学中，开发了基于对话式教学交互的智能授导系统。随着信息技术在教育中应用的深入和在线教育形态的发展．在线的对话式教学重新引起人们的关注。通过阐述对话式教学交互的内涵与特点．分析网络环境下教师一学生、学生一学生、学生一内容之间的交互过程，列举可用于对话式教学交互的在线工具。并以Oppia平台为例，具体设计了对话式在线教学交互的具体活动。

Instructional Interaction and Tool Utilization in Web-based Dialogue Teaching

Dialogue teaching focuses on student-centered principle in the process of learning, so as to promote the construc- tion of knowledge through interaction and cooperation. In the mid-term of last century, this conception was applied to computer-aided instruction （CAI） to develop an intelligent tutoring system （ITS） based on dialogue teaching. With the gradual and further application of information technology in education and the development of online teaching, the web-based dialogue teaching has attracted renewed attention. The connotation, features, interaction between teacher-student, student-student and student-content are elaborated before some related online tools are listed. Taking Oppia as an example, teaching activities in web-based dialogue teaching are designed.