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Cowan, J., Yamagata_Lynch, L. & Daniel, M. (2012). Teachers’ Perceptions of the Challenges in Innovating with Technology-Rich Content in the Geosciences Classroom: An Activity Systems Analysis. In T. Amiel & B. Wilson (Eds.), Proceedings of EdMedia 2012--World Conference on Educational Media and Technology (pp. 306-310). Denver, Colorado, USA: Association for the Advancement of Computing in Education (AACE).