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Lee, S.T., Chang, H.M., Elam, P. & Smith, A. (2007). Designing and Development of a Computer Based GED Mathematics Tutorial Program: from Cognitive Load and Motivational perspectives. In C. Montgomerie & J. Seale (Eds.), Proceedings of ED-MEDIA 2007--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 3628-3631). Vancouver, Canada: Association for the Advancement of Computing in Education (AACE).