MoMath’s gifted math program for students grade 9-12

Sundays, 4:00 pm to 5:30 pm ET

Program | Application Process | Schedule | Pricing |  Policies

Expansions, the gifted program to engage and challenge New York City’s brightest math students, now includes Icosahedron, a high school track taught by International Math Olympiad participant and trainer, Paul Zeitz.  Paul is also co-founder and Board Chairman of Proof School, co-founder of the San Francisco Math Circle, co-founder of the Bay Area Math Olympiad, and author of The Art and Craft of Problem Solving.

MoMath is currently accepting applications for limited spots in the fall 2020 semester — now online!

Application process

MoMath’s Expansions program offers a small class size approach, hands-on lessons, and a long-term, cohort model that builds dynamic groups of students who learn effectively together and return year after year.

Applications are considered on a rolling basis as spots become available.  To apply, first take this self-assessment to determine if the level of content of Icosahedron is right for you.  (Please note that no refund will be provided if the content level is not a match.)  Then, please fill out this online form and follow the instructions provided upon submitting the form.


The Icosahedron fall 2020 semester will run from Sunday, September 13 through Sunday, November 22, from 4:00 pm to 5:30 pm.  The spring 2021 semester will also meet on ten Sundays, with dates to be determined.  The Icosahedron fall 2020 semester will meet on these days:

September 27
October 4
October 11
October 18
October 25
November 1
November 8
November 15
November 22
December 6


Participation will require full semester enrollment. Early bird registration for the semester is $995; full year is $1,800 (current Museum members at the Membership Squared level or above receive a 10% discount).  MoMath does not prorate fees for mid-term registrations, and refunds will not be given for absences or for any other reasons.  Museum admission is not included in the registration.

No refund will be provided for withdrawal from Icosahedron for any reason, including issues related to content level.

Need-based scholarships are available.  Scholarship applicants must meet the income guidelines of the federal Free and Reduced Lunch program and provide verification of household income.  Scholarship applicants should complete the regular application form online and send a separate email to scholarships@momath.org with a request for scholarship application instructions.  Please allow at least two weeks for the scholarship committee’s review process.


MoMath will make every effort to run classes as scheduled, but occasionally unusual circumstances beyond MoMath’s control may require that a class be cancelled.  If such a cancellation occurs, MoMath may, at its sole discretion, offer make-up sessions.

Note that a particular level will run only if a minimum number of participants register before the start date of the full session.  In the rare event that a particular level is cancelled, registrants will be notified and provided with a full refund.

MoMath does not provide make-up classes for absences.  Each Expansions series accepts a limited enrollment in order to provide individualized attention to each student.  While many reasons may cause a student to miss a class, a registered student holds a reserved seat while others may be turned away due to limited capacity.  Additionally, the Museum provides staffing and other resources based on registration.  For these reasons, the Museum has a strict no-refund and no make-up policy.

All Expansions participants are expected to exhibit good behavior to ensure a positive experience for everyone.  At its sole discretion, MoMath may remove a student from the Expansions program for behavioral reasons.  If a student is removed for behavioral reasons, for either the day or the remainder of the program, no refund will be issued.