Olanoff, D., Bajwa, N. P., Feldman, Z., Thanheiser, E., Welder, R. M., & Tobias, J. M. (2018). Using the array model to develop prospective teachers’ understanding of multiplication and its properties. In T. E. Hodges, G. J. Roy, & A. M. Tyminski (Eds.), *Proceedings of the 40th Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education *(p. 833). Greenville, SC: University of South Carolina & Clemson University.

# Category Archives: Publications

# Greater number of larger pieces: A strategy to promote prospective teachers’ fraction number sense development

Olanoff, D., Feldman, Z., Welder, R. M., Tobias, J. M., Thanheiser, E., & Hillen, A. (2016). Greater number of larger pieces: A strategy to promote prospective teachers’ fraction number sense development. In M. B. Wood, E. E. Turner, M. Civil, & J. A. Eli (Eds.), *Proceedings of the 38th Annual Conference of the North American Chapter of the International Group for the Psychology of Mathematics Education *(pp. 799-805). Tucson, AZ: University of Arizona.

# Reflective analysis as a tool for task redesign: The case of prospective elementary teachers solving and posing fraction comparison problems

Thanheiser, E., Olanoff, D., Hillen, A., Feldman, Z., Tobias, J. M., & Welder, R. M. (2016). Reflective analysis as a tool for task redesign: The case of prospective elementary teachers solving and posing fraction comparison problems. *Journal of Mathematics Teacher Education*, 19(2-3), 123-148.

# When is a mathematical task a good task?

Feldman, Z., Thanheiser, E., Welder, R. M., Tobias, J. M., Hillen, A. F., & Olanoff, D. (2016). When is a mathematical task a good task? In L. C. Hart, S. Oesterle, S. S. Auslander, & A. Kajander (Eds.), *The Mathematics Education of Elementary Teachers: Issues and Strategies for Content Courses *(pp. 9-24). Charlotte, NC: Information Age Publishing.

# Modifying children’s tasks into cognitively demanding tasks for preservice elementary teachers

Welder, R. M., Tobias, J. M., Feldman, Z., Hillen, A., Olanoff, D., & Thanheiser, E. (2015). Modifying children’s tasks into cognitively demanding tasks for preservice elementary teachers. In T. G. Bartell, K. N. Bieda, R. T. Putnam, K. Bradfield, & H. Dominguez (Eds.), *Proceedings of the 37th Annual Conference of the North American Chapter of the International Group for the Psychology of Mathematics Education* (pp. 984-987). East Lansing, MI: Michigan State University.

# Facilitating prospective teachers’ fraction number sense development through problem solving and problem posing

Olanoff, D., Hillen, A. F., Tobias, J. M., Welder, R. M., Thanheiser, E., & Feldman, Z. (2014). Facilitating prospective teachers’ fraction number sense development through problem solving and problem posing. In P. Liljedahl, C. Nicol, S. Oesterle, & D. Allan (Eds.),* Proceedings of the 38th Conference of the International Group for the Psychology of Mathematics Education* (Vol. 6; p. 187). Vancouver, Canada: PME.

# Prospective elementary teachers’ analysis of student thinking

Feldman, Z., Tobias, J. M., Olanoff, D., Thanheiser, E., Hillen, A. F., & Welder, R. M. (2014). Prospective elementary teachers’ analysis of student thinking. In P. Liljedahl, C. Nicol, S. Oesterle, & D. Allan (Eds.),* Proceedings of the 38th Conference of the International Group for the Psychology of Mathematics Education* (Vol. 6; p. 67). Vancouver, Canada: PME.

# Research-based modifications of elementary school tasks for use in teacher preparation

Tobias, J. M., Olanoff, D., Hillen, A., Welder, R. M., Feldman, Z., & Thanheiser, E. (2014). Research-based modifications of elementary school tasks for use in teacher preparation. In K. King (Ed.), *Annual Perspectives in Mathematics Education: Using Research to Improve Instruction *(pp. 181-192). Reston, VA: National Council of Teachers of Mathematics.

# Task design in mathematics content courses for preservice elementary teachers: A collaborative approach

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.