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.

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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.

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MTCircular Magazine

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

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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 https://mathcommunities.org/ for information about Math Teachers’ Circle events online during COVID-19 stay-at-home orders.