陈羽洁， 张义兵， 徐朝军
【关 键 词 】：
中间人； 外组中间人； 知识建构； 特征分析
Knowledge building encourages students to interact with each other within different groups to form a high-level of collective cognitive responsibility, in which a special role (a mediator) with unique features and functions is generated. In order to explore the unique features and functions of the mediator to support the development of knowledge building theory and educational practice, this study has tracked
"Learning Science" in the master's program of Nanjing Normal University. Raw data refers to the number and direction of students' views and interactions expressed, constructed and commented on Shuke. UCINET is used to determine mediators in outside groups and descriptive statistics and content analysis are used to summarize the key features and functions of mediators. It is found that mediators in outside groups in knowledge building community are generative, dynamic, nested and indirect. They interfere with the activities of other groups by stating their ideas, providing information and asking questions continuously. They are not only information mediators but also knowledge mediators. Teachers can be sensitive to those mediators and guide them consciously and actively to promote the deep knowledge construction in the community.