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About Peter

Dr. Peter Liljedahl is a professor of mathematics education at Simon Fraser University in Vancouver, Canada. Peter has authored or coauthored numerous books, book chapters, and journal articles on topics central to the teaching and learning of mathematics, and is most known as the author of the global phenomenon Building Thinking Classrooms in Mathematics: 14 Practices for Enhancing Learning (Corwin 2020).


A former high school mathematics teacher, Peter has dedicated his life’s work to the improvement of education. Among his greatest joys is working with students and educators in classrooms around the world—learning and sharing about what helps students think more and think longer. He has kept his research close to the classroom and is a sought-after speaker and professional development facilitator, traveling the world giving talks, and working with educators on the topic of Building Thinking Classrooms for which he has won the Cmolik Prize for the Enhancement of Public Education and the Fields Institute’s Margaret Sinclair Memorial Award for Innovation and Excellence in Mathematics Education.

Peter is the past-president of the Canadian Mathematics Education Study Group (CMESG), past-president of the International Group for the Psychology of Mathematics Education (IGPME), current editor of the International Journal of Science and Mathematics Education (IJSME), on the editorial board of five major international journals, and a member of the NCTM Research Committee.

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