I produce these stickers and t-shirts, and have distributed over 25,000 stickers in the last four years.  Stickers are always available via eBay (or find me at a conference).  Shirts are for sale usually once a year, in the fall.

All shirts and onesies range from $16-$21.

Profits from the shirts ($1-$4 per shirt) are sent directly to TODOS, Mathematics for all, which is a professional organization that advocates for equity and excellence in mathematics education for ALL students – in particular, Latina/o students.

Store open October 25 – November 9, 2026!