1Mioduster,D., Nachmias,R., Labav,O.,& Oren, A Web_based Learning environments: Current pedagogical and technological state[J].Journal of research on computing in education,2000, 33(1):55-77.
4Stephen C.Ehrmann.Emerging Models Of Online Collaborative leaming[J].Joumal of AECT,2001, (1).
5Project ICONS of Maryland University.International Communication and Negotiation Simulations (ICONS)[DB/OL].http://www.icons.umd.edu, 2004-9-16.
6.[DB/OL].http://www.nje.cn/zw,2004-10-5.
7Gunawardena,C.N., Jennings,B.,Ortegano_layne,L.,Frechette,C., Carabajal, K., Lindemann,K., & Mummert,J.Building an On line Wisdom Community:a Transformational Design Model[J].Journal of Computing in Higher Education, 2004,15 (2) :40-62.
8Gunawardena,C.N.The Challenge of Designing Inquiry-based Online Learning Environments: Theory into Practice[A].T. Duffy and J. Kirkley(Eds.). Learner Centered Theory and Practice in Distance Education: Cases from Higher Education[C].Mah wah, NJ:Lawrence Erlbaum Associates,Inc.,2004.143-158.
9Hill, J. R. , Hannafin, M.J. Cognitive Strategies and Learning from the World Web Wide ETR&D. Vol. 45, No. 4,1997:37-64.
10Gayle, V. D., Shorter, L., Jordan, K., and Rasmussen, K. L. ,Learning Strategies and Navigation Decisions of Children using a Hypermedia Lesson. Journal of Educational Multimedia and Hypermedia. Vo18,No2,1999:175-186.
