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Liu, M.C., Lai, K.A. & Chu, Y.C. (2009). Patterns of Constructive Engagement in a Web-based Learning Activity for Teacher Professional Development. In G. Siemens & C. Fulford (Eds.), Proceedings of ED-MEDIA 2009--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 1631-1640). Honolulu, HI, USA: Association for the Advancement of Computing in Education (AACE).