Welder, R. M., Tobias, J. M., Feldman, Z., Hillen, A., Olanoff, D., & Thanheiser, E. (2015, November). Modifying Children’s Tasks into Cognitively Demanding Task for Preservice Elementary Teachers. Presentation for the 37th Annual Conference of the North American Chapter of the International Group for the Psychology of Mathematics Education. East Lansing, MI: Michigan State University.
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