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Sorensen, E. & Takle, E. (2001). Collaborative Knowledge Building in Web-based Learning: Assessing the Quality of Dialogue. In C. Montgomerie & J. Viteli (Eds.), Proceedings of ED-MEDIA 2001--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 1772-1777). Norfolk, VA USA: Association for the Advancement of Computing in Education (AACE).