基于网络的协作式学习是网络教育领域的一个重要研究方向。首先分析了现有基于网络的协作学习系统及Web2．0与协作学习相结合的可行性，然后以Web2．0的理念与技术为依托，建立了螺旋上升式的基于Web2．0的协作式学习系统模型，引入了大众评审机制，革新了异质分组的实现方法，开发出了一个全新的基于网络的协作式学习系统并在教学实践中进行了应用。教学应用表明该系统在提高学生学习成绩和培养学生综合素质，如：表达能力、协作能力、集体意识等方面都有一定的作用。%Web-based collaborative learning is a major research topic in Web-based education. The current Web-based collaborative learning systems and feasibility of combining Web2.0 and collaborative learning are analyzed first. Then according to Web2.0 idea and technology, a spiral ascending collaborative learning model based on Web2.0 is established and the mechanism of populace appraisal is introduced. Approach of implementing heterogeneous grouping is reformed. A brand new Web-based collaborative learning system has been developed, and applied in teaching. Teaching application shows the system is effective to enhance school performance and train students＇ comprehensive quality, such as presentation skill, collaborative ability, collective consciousness, etc.
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