Please RSVP to the first session of the SF MTC

[Brianna Donaldson]

[posting on behalf of the San Francisco MTC organizers[

Hi Folks,

Please mark your calendars and RSVP to our first event of the academic year!

Episode 1 of Season 9 of the SF Math Teachers Circle takes place on 

Saturday, 25 Oct 2025

at Proof School, 973 Mission St., 

from 10:30AM--1PM. 

We are excited to announce that our presenter will be the globe-trotting James Tanton, who moved to the East Bay this summer!

How to Fold Things into Thirds – and Subsequent Deeply Mathematical Conundrums. Folding a strip of paper by hand into halves, quarters, or eighths can be done with a good degree of accuracy. But what about folding it into thirds, sevenths, or thirty-sevenths? Let’s explore the surprisingly rich world of simple paper folding and discover why some prime numbers are more cooperative in this task than others!

James Tanton (PhD, Mathematics, Princeton) is an educator dedicated to rethinking the high school and college math curriculum to create a more effective and joyful learning experience for all. With over 20 years of teaching experience, he has inspired countless students and teachers in a variety of educational settings. James is the co-founder of the Global Math Project, which has engaged over 7.8 million teachers and students worldwide with an exemplar of reimagined mathematics curriculum. He also serves as the Mathematical Association of America’s Mathematician-at-Large and is currently affiliated with the Berkeley School of Education.

We will provide coffee, tea, pastries, and lunch.

Proof School is located on Mission Street between 5th and 6th.  There's cheap metered street parking across the street (only good for 2 hours, though; tied to your license plate) and more expensive parking at the Fifth and Mission garage at...guess!  And BART and buses are nearby.

All teachers at all levels are welcome.  Please share this invitation with others.  Our events are free (including lunch).

Please RSVP with this form by Wednesday 22 Oct 2025 (so that we can plan our lunch order).

We hope to see you soon!

And mark your calendars for our coming sessions (all on Saturdays 1030-1 at Proof School):

Dec 12 (Alon Amit)

Jan 24 (Ted Alper)

Mar 14 (Paul Zeitz)

Apr 11 (TBA)

May 9 (Rebecca Garcia)

-SFMTC Organizing Team

Sophie Ehlen

Avery Pickford

Paul Zeitz