Professional communities centered on mathematics

We connect teachers and professors through shared mathematical discovery.

Image provided by San Diego MTC

“Unparalleled professional development in mathematics and math pedagogy.”

Heather Danforth-Clayson, member of AIM MTC and math teacher at Helios School, Sunnyvale, CA

Math Session Videos

An Introduction to Problem Solving

This session gets at the heart of Math Teachers’ Circle: becoming comfortable with not knowing how to solve a problem.

Grid Power

A sheet of grid paper and a simple counting question reveal some deep mathematical surprises.

Exploding Dots

An imaginary counting machine explodes teachers’ preconceptions about arithmetic.

More videos >

Other mathematical materials >

COVID-19: Joyful Math Online

During stay-at-home orders related to COVID-19, we encourage you to check out Math Circles and other free, interactive online math events. Visit AIM’s new Math Communities site for more information.


MTCs empower teachers’ voices and experiences

MTCs are highlighted as a “bright spot” in teacher professional development in a 2017 white paper published by 100Kin10.


MTCircular Magazine

Our popular semi-annual magazine shares stories and insights from Circles across the country. Subscribe here.


Start a Circle

Our Organizer Toolkit contains a wealth of materials to help you start a successful, self-sustaining MTC. Our seed grant program provides start-up funding to selected Circles.

Upcoming Events

Please visit for information about Math Teachers’ Circle events online during COVID-19 stay-at-home orders.