Hillen, A., Olanoff, D., & Welder, R. M. (2015, April). *Moving Beyond Common Denominators: Comparing Fractions Using Reasoning and Sense-Making*. Workshop presented at the National Council of Teachers of Mathematics Annual Meeting. Boston, Massachusetts.

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# Tag Archives: NCTM

Content related to the National Council of Teachers of Mathematics.

# 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.