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Educational Studies in Mathematics > 2017 > 96 > 2 > 129-144
Journal of Mathematical Behavior > 2010 > 29 > 2 > 76-85
Educational Studies in Mathematics > 2005 > 60 > 3 > 297-321
Educational Studies in Mathematics > 2017 > 96 > 2 > 129-144
Journal of Mathematical Behavior > 2010 > 29 > 2 > 76-85
Educational Studies in Mathematics > 2005 > 60 > 3 > 297-321