IM Logo

Sign up!
About Us
about_us fragment rendered at 2014-04-12 05:10:18 +0000

Illustrative Mathematics™ was originally developed at the University of Arizona. It was started in 2011 as an initiative of the Institute for Mathematics & Education funded by the Bill & Melinda Gates Foundation and has operated since 2013 as a 501(c)(3) nonprofit corporation.


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


Illustrative Mathematics is a discerning community of educators dedicated to the coherent learning of mathematics. We collaborate at, sharing carefully vetted resources for teachers and teacher leaders to give our children an understanding of mathematics and skill in using it. We provide expert guidance to states and districts working to improve mathematics education.


To illustrate standards with impeccably crafted tasks, videos, lesson plans, and curriculum modules.
To be the premier source of freely available online mathematics content for teachers, teacher leaders, assessment developers, curriculum writers, and teacher educators.
To be a discerning professional community that creates content and deploys expertise in multiple ways.
To engage individuals and small groups, with rare and needed expertise, who are currently isolated in pockets across the country.
To provide a space for teachers to share across classrooms and help each other grow in teaching our children mathematics.

Board of Directors

William G. McCallum, President
Linda Plattner, Secretary
Rob Stansfield, Treasurer
Kristin Umland
Ellen Whitesides

If you have questions or suggestions, please send an email to
Illustrative Mathematics is registered in the U.S. Patent and Trademark Office.