Many computers have now been placed in schools, and new information technology like the Internet will soon be introduced. Collaborative learning through computer networks and use of the Internet for education have begun to attract many educators' notice. The purpose of this study was to develop a "distributed collaborative learning environment", which realizes collaborative real-time learning on a computer network. To accomplish this study, we developed a technical infrastructure termed "Computer Supported Collaborative Learning (CSCL)". In the system, a student can utilize two work spaces which consist of a personal work space and a collaborative work space. For group learning, students solved problems through discussion supported by an author designed system comprised of two functions : diagnosis and advisement of students' answers, and coordination of their discussion.
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