The purpose of this study is to support the learning activity in the Internet learning space. In this paper, we examine the GRID technology as the knowledge management for supporting "collaborative learning" / "collaboration in learning" (CL). RAPSODY-EX (REX) is a distributed learningsupportenvironmentorganizedasalearninginfrastructure. REXcan effectively carry out to support collaborative activities in asynchronous/synchronous learning mode. The mixed distributed learning environment is utilized as a new learning ecology, where individual / collaborativelearningenvironmentwithaudio/visualchannel(likeasavideoconference)areperformedonthemultimediacommunicationnetwork. Inthis mixed distributed learning environment, people can arrange, modify and integrate educational information for the purpose of investigating, decision making,planning,problemsolving,buildingknowledgeandselfdevelopment. Diverse information in the educational context is referred and reused as knowle...