4Mioduser, D., Nachmias, R., Lahav, 0., &Oren, A.Web-based learning environments: Current pedagogical and technological state [J]. Journal of research on computingin education, 2000, 33(1), 55-77.
5Scardamalia, M., Bereiter, C., McLean, R.S.,Swallow, J., & Woodruff, E. Computer supported intentional learning environments [J]. Journal of Educational Computing Research, 1989, 5(1), 51-68.
6Bell, P. & Davis, E. A. Designing an activity in the knowledge integration environment [Z]. Paper presented at the Annual Meeting of hERA, New York, 1996.
7Pea; R. D., Edelson, D., & Gomez, L. The CoVis Collaboratory[Z]. Presented at the Annual Meeting of AERA,New Orleans, 1994.
8Reil, M. M. Learning circles: Virtual communities for elementary and secondary schools [Z]. Electronircally published at URL: http://www, ed. uiuc. edu/guidelines/Riel-93. html, 1993.
9Harris, J. B. Organizing and facilitating telecollaborative projects. The Computing Teacher [J],1995, 22 (5).
10Levin, J., Waugh, K, Brown, D., & Clift, R.Teaching apprenticeships: A new organizational framework for improving teacher education using electronic networks[J]. Journal of Wachine-Mediated Learnin~ 1994, 4(2~3),149-161.
