Thanheiser, E., Hillen, A., Olanoff, D., Feldman, Z., Welder, R. M., & Tobias, J. M. (2013). Task design in mathematics content courses for preservice elementary teachers: A collaborative approach. In M. V. Martinez & A. Castro Superfine (Eds.), Proceedings of the 35th Annual Conference of the North American Chapter of the International Group for the Psychology of Mathematics Education (pp. 893-896). Chicago, IL: University of Illinois at Chicago.