3Tammy Schellens, Martin Valcke. Collaborative learning in asynchronous discussion groups: What about the impact on cognitive processing? [J].Computers in Human Behavior,1995,21:957-975.
4Teresa Hu, bscher-Youngera, N. Hari Narayananb .Authority and convergence in collaborative [J].learning Computers & Education 2003,41:313-334.
5J. M. van Bruggen, P. A. Kirschner, &W. Jochems . External representation of argumentation in CSCL and the management of cognitive load[J].Learning and Instruction,2002,12:121-138.
6Jannet van Drie, Carla van Boxtel,Jos Jaspers, etc.Effects of representational guidance on domain specific reasoning in CSCL[J].Computers in Human Behavior,2005,21: 575-602.
7Flavia Maria Santoro, Marcos R.S.Borges. An infrastructure to support development of collaborative project-based learning environments[A]. Proceedings of IEEE CRIWG 2000[C].Portugal, 2000. 78-85.
8Gustavo Zurita, Miguel Nussbaum .Computer supported collaborative learning using wirelessly interconnected handheld computers[J]. Computers & Education,2004,42:289-314.
9J.M. van Bruggen , P.A. Kirschner, W. Jochems. External representation of argumentation in CSCL and the management of cognitive load [J].Learning and Instrnction,2002,12:121-138.
