Maria Blanton is a Senior Scientist at TERC in Cambridge, MA. Prior to joining TERC, she was a Professor of Mathematics Education in the STEM Education Department at the University of Massachusetts Dartmouth. Her primary research interests include teaching and learning algebra in the elementary grades. Her expertise has led to numerous federally-funded research projects and national and international presentations and publications (in, e.g., Journal for Research in Mathematics Education, Educational Studies in Mathematics, Teaching Children Mathematics). She is co-editor of the research volumes Algebra in the Early Grades (2008, Taylor/Francis) and Teaching and Learning Proof Across the Grades (2009, Routledge), author of Algebra and the Elementary Classroom: Transforming Thinking, Transforming Practice (2008, Heinemann), and co-author of Developing Essential Understanding of Algebraic Thinking for Teaching Mathematics in Grades 3–5 (2011, NCTM). She has served as Chair of the Editorial Panel for the Journal for Research in Mathematics Education and Chair of the Special Interest Group for Research in Mathematics Education (SIG-RME) of AERA. Dr. Blanton is currently PI of US DoE and NSF-funded projects investigating Grades K-5 children’s understanding of algebraic thinking and the impacts of sustained early algebra education on children’s algebra-readiness.