We are pleased to welcome Ron Lancaster back to HSTM 2026. Ron will be offering professional learning and developing the Maths Trail.

Ron Lancaster is an Associate Professor Emeritus at the Ontario Institute for Studies in Education (OISE) at the University of Toronto, where he taught mathematics education for 17 years. Prior to his university work, Ron spent 20 years teaching middle and high school mathematics in both coeducational and all-girls schools. His passion for helping students see the beauty and relevance of mathematics has defined his career.

Ron has led student-focused mathematics enrichment around the world, including at the North East and South East Asian Mathematics Competitions, Horizons Math Camp at Upper Canada College, and the Fogelson Symposium at The Trinity School. He also led a Mathematical & Cultural Explorations program in Greece and is known for designing Math Scholars sessions and engaging problem-solving experiences for high-performing students. He has contributed to several past HSTM events in similar roles, supporting both student learning and professional development for educators.

A highly regarded speaker and consultant, Ron has worked with educators at international schools in Seoul, Jakarta, Delhi, Dubai, and beyond. He has presented at more than 70 NCTM conferences, 41 Ontario math conferences, and 18 East Asia Regional Council of Overseas Schools events. He also serves as a national instructor for Texas Instruments, supporting teachers in integrating technology into math instruction.

Ron is internationally known for creating Math Trails—immersive, real-world math experiences that help students connect mathematics to the environment around them. He has designed Trails in Singapore, New York City, and at museums and cultural sites around the world. His work makes mathematics tangible, joyful, and relevant, and he looks forward to sharing this approach with students and teachers once again at the HSTM event at Dulwich International High School Programme Suzhou.