Just got this one via email:
MoMath is pleased to announce a new series, Extensions, an online program for mathematically-gifted students in grades six through twelve (extensions.momath.org).
In Extensions, students can keep their minds sharp from now through the start of school this fall. Join a monthly Zoom session hosted by MoMath’s Outreach Mathematician and co-author of the groundbreaking new math paper as seen in the New York Times, Chaim Goodman-Strauss, from 3:30 pm to 5:00 pm ET, on one Sunday afternoon each month from May through August.
Please visit extensions.momath.org to review eligibility criteria before registering. (Note: all current and former MoMath Expansions students are eligible.)
Sessions will be held on Sundays from 3:30 to 5:00 pm ET on the following dates: May 21, June 25, July 23, and August 20.
Learn more about session topics and register at extensions.momath.org.