Her research interests are in the application of sociocultural theory to the development of undergraduate students' thinking about mathematical proof and issues concerning the teaching and learning of algebraic reasoning in the elementary grades. Her special focus is on classroom cultures that foster the kinds of discussion and purposeful argument that are central to the development of understanding of mathematical proof and of the generalization and formalization skills underlying algebraic reasoning. She received her Ph.D. in Mathematics Education from North Carolina State University. For a full curriculum vita, see theproofproject.org.