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Donnelly, R. (2004). Different Thinking Hats: The Continuously-Evolving Role of the Instructor in E-Problem Based Learning (E-PBL). In L. Cantoni & C. McLoughlin (Eds.), Proceedings of ED-MEDIA 2004--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 2864-2870). Lugano, Switzerland: Association for the Advancement of Computing in Education (AACE).