Dr. Peter Liljedahl is a professor of mathematics education at Simon Fraser University in Vancouver, Canada and author of the best-selling Building Thinking Classrooms in Mathematics (Grades K-12): 14 

Teaching Practices for Enhancing Learning (Corwin, 2020) and Modifying Your Thinking Classroom for Different Settings: A Supplement to Building Thinking Classrooms in Mathematics (Corwin, 2021). 

Peter is a sought-after presenter and professional development facilitator who has worked all over the world 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 a former high school mathematics teacher who has kept his research close to the classroom and consults regularly with teachers, schools, school districts, ministries of education, and universities on issues of teaching and learning, assessment, and numeracy.