Fonger, N. L., Stephens, A., Blanton, M., & Knuth, E. (2015). A learning progressions approach to early algebra research and practice [PDF of Presentation] [PDF of Brief Research Report]. In T. G. Bartell, K. N. Bieda, R. T. Putnam, K. Bradfield & H. Dominguez (Eds.), Proceedings of the 37th annual meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (pp. 201-204). East Lansing, MI: Michigan State University.
Fonger, N. L. (2013). Equivalence and equation solving with multiple tools: Toward a local instructional theory. [PDF of Presentation] [PDF of Research Report] Research report presented at the Psychology of Mathematics Education North American Chapter, Chicago, Ill. November 14-17.