About Us

At Illustrative Mathematics we are committed to creating a world where learners know, use and enjoy mathematics.

We craft and deliver high-quality educational resources for teachers and students by developing great people who work in spirited teams to do extraordinary things.

A world where learners know, use, and enjoy mathematics.

Leadership Team

William G. McCallum
Founder and President
Lisa O'Masta
Chief Executive Officer
Karl Nelson
Chief Operating Officer and Chief Technical Officer
Trisha Thomas
VP for Professional Services
Kristin Umland
VP for Content Development

Board of Directors

Jean Foster
Heather Hill
Gregg Levin
William G. McCallum
Lisa O'Masta
Linda Plattner
Don Shalvey
Kristin Umland
Ellen Whitesides
George Zettler

Advisory Board

Diane J. Briars
Phil Daro
John Ewing
Jeff Livingston
Nicole Neal
Jason Zimba
Dave Zura