Ron Lancaster is an Associate Professor Emeritus at the Ontario Institute for Studies in Education (OISE) at the University of Toronto, where he spent 17 years teaching mathematics courses for pre-service middle and high school teachers. Before entering academia, Ron taught mathematics for 20 years in both coeducational public schools and a K–12 all-girls independent school.

Ron’s professional work spans diverse educational settings. He has consulted for international, public, and private schools, as well as technology companies, museums, and public broadcasters—helping to bridge classroom practice with real-world applications of mathematics.

A highly sought-after speaker, Ron has delivered hundreds of presentations worldwide. He has been a regular presenter for 35 years at the renowned Anja S. Greer Conference on Mathematics and Technology at Phillips Exeter Academy, and has spoken at 72 National Council of Teachers of Mathematics (NCTM) conferences, 41 Ontario Association for Mathematics Education (OAME) events, and 18 East Asia Regional Council of Overseas Schools (EARCOS) in-person conferences, weekend workshops, and webinars.

As a prolific contributor to the field, Ron has written extensively for publications such as The Mathematics Teacher (NCTM) and The Ontario Mathematics Gazette (OAME). His long-running features—including Mathematical Lens, Media Clips, and Mathematical Snapshots—demonstrated his ability to connect mathematics to everyday life. He also contributed to NCTM’s foundational Principles and Standards for School Mathematics and developed classroom activities inspired by the CBS television series NUMB3RS, distributed by Words and Numbers.

Ron is especially known for his innovative Math Trails—interactive, real-world explorations of mathematics in outdoor and urban environments. Thousands of students and educators have experienced his Math Trails in cities such as Singapore (Suntec City, Fort Canning Park, and the NUS Art Museum) and New York City (at the Museum of Mathematics and in collaboration with Math for America and the Avenues School).

A passionate advocate for discovering mathematics in the world around us, Ron is rarely without his “math glasses” and camera. Whether wandering city streets or exploring nature, he’s always ready to capture the patterns, shapes, and curiosities that reveal the beauty of mathematics in daily life.

Ron’s lifelong contributions to mathematics education have earned him multiple honors, including the 2015 Margaret Sinclair Memorial Award for Innovation and Excellence in Mathematics Education from the Fields Institute and the 2022 Lifetime Achievement Award from the Ontario Association for Mathematics Education.