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Rosenberg, J., Greenhalgh, S. & Koehler, M. (2015). A performance assessment of teachers’ TPACK using artifacts from digital portfolios. In D. Rutledge & D. Slykhuis (Eds.), Proceedings of SITE 2015--Society for Information Technology & Teacher Education International Conference (pp. 3390-3397). Las Vegas, NV, United States: Association for the Advancement of Computing in Education (AACE).