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Lehman, J., Richardson, J., Ertmer, P., Newby, T. & Campbell, J. (2009). Impact of Asynchronous Online Discussions: A Study of Implementation in Two Large-Enrollment Blended Courses. In G. Siemens & C. Fulford (Eds.), Proceedings of ED-MEDIA 2009--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 2928-2936). Honolulu, HI, USA: Association for the Advancement of Computing in Education (AACE).