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Sari, E. & Herrington, J. (2013). Using Design-based Research to Investigate the Design and Development of an Online Community of Practice for Teacher Professional Development. In J. Herrington, A. Couros & V. Irvine (Eds.), Proceedings of EdMedia 2013--World Conference on Educational Media and Technology (pp. 121-127). Victoria, Canada: Association for the Advancement of Computing in Education (AACE).