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Oliveira, J.M., Cervera, M.G. & Martí, M.C. (2009). Learning as representation and representation as learning: A theoretical framework for teacher knowledge in the digital age. In G. Siemens & C. Fulford (Eds.), Proceedings of ED-MEDIA 2009--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 2646-2653). Honolulu, HI, USA: Association for the Advancement of Computing in Education (AACE).