​A former classroom teacher, Cathy Marks Krpan is a professor at the Ontario Institute for Studies in Education, at the University of Toronto, where she teaches graduate courses in mathematics education. She works with classroom teachers and school districts across North America and internationally on effective teaching and learning strategies in mathematics. An award-winning author and educator, Cathy’s recent publications, Teaching Math with Meaning (Pearson Education Canada) and Concept Circle Thinking Routines (Didax, USA) explore ways to empower all learners in developing rich mathematical thinking. She enjoys conducting research in classrooms alongside teachers, students, and curriculum leaders. Cathy is a recipient of the Margaret Sinclair Award which recognizes innovation and excellence in mathematics education. She can often be seen in the early hours of the morning joyfully loading up her car with many boxes of wonderful mathy things.