【作 者】：
柴少明
【关 键 词 】：
知识建构； 对话； 网络学习社区； 三元互动对话
【栏 目】：
网络教育
【中文摘要】：
知识建构主要发生在社区成员之间的对话之中，研究知识建构对话可以深入了解知识建构的过程和机制。文章从对话的视角阐述了知识建构的理论基础，探讨了知识建构对话的特点和功能，并分析了网络平台支持知识建构对话的情况，在此基础上构建了一个网络学习社区知识建构对话的模型。该模型表明：在知识建构的实践活动中，包含着认知水平和社会互动水平上的对话，这两种对话都是围绕知识制品的改进和创新来进行的，对话的最终目标是建构新的知识。文章最后以案例说明该模型可以指导教师设计知识建构环境，在实践中引导学生围绕真实问题，参与到社会性对话和认知性对话中，以提出和改进观点为核心，从而建构新的有价值的知识制品。
【英文摘要】：
Knowledge building mainly occurs in the dialogue between members of online community and research on the dialogue can help explore the process and mechanism of knowledge building. This paper analyzes the theoretical foundations of knowledge building from dialogue perspective and explores the features and functions of knowledge building discourses. It also discusses how Knowledge Forum-an online platform supports knowledge building discourses. And then a dialogue-based knowledge building model in online learning community is developed，which shows that knowledge building dialogue includes cognitive dialogue and social dialogue and both progress around improvement and creation of knowledge artifacts in order to build new knowledge. Finally an application case is described to indicate that this model can act as a framework to guide the design of knowledge building environment and lead students to participation in cognitive and social dialogues for producing and improving new ideas and building meaningful knowledge artifacts.