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Journal of Mathematics Teacher Education > 2012 > 15 > 6 > 453-479
2010 IEEE Frontiers in Education Conference (FIE) > T4C-1 - T4C-6
Educational Technology Research and Development > 2010 > 58 > 3 > 311-324
Journal of Mathematics Teacher Education > 2012 > 15 > 6 > 453-479
2010 IEEE Frontiers in Education Conference (FIE) > T4C-1 - T4C-6
Educational Technology Research and Development > 2010 > 58 > 3 > 311-324