Expansions: MoMath’s gifted program to engage and challenge NYC’s brightest math students

Program | Application Process | Pricing | Schedule | Policies

What is Expansions, the gifted program at MoMath?

Featuring programs for mathematically gifted students enrolled in 1st through 12th grades, the Expansions workshops are designed and delivered by MoMath’s educational team to illuminate the wonders of mathematics, challenge and inspire students, and broaden their mathematical horizons. With topics ranging from fractals to cellular automata, these afternoon classes provide an opportunity for participants to learn advanced and fascinating topics not included in the standard K-12 curriculum. Plus, your child can benefit from enjoying math together with small groups of talented and focused young scholars.

Expansions offers the following weekly sessions, which are differentiated by mathematical experience, rather than by age or grade. Grade levels shown parenthetically provide rough guidelines, and final placement is based on demonstrated student ability.

  • Tetrahedron: For those who are comfortable with addition and subtraction (approx. grades 1-2) — Tuesdays, 4:15 pm to 5:00 pm.
  • Hexahedron: For those who have conquered multiplication and division (approx. grades 3-4) — Thursdays, 4:00 pm to 4:45 pm.
  • Octahedron: For those who commonly find common denominators (approx. grades 5-6) — Tuesdays, 4:00 pm to 4:45 pm.
  • Dodecahedron: For those with functional knowledge of functions (approx. grades 7-8) — Thursdays, 4:15 pm to 5:00 pm.
  • Icosahedron: For those who routinely find the roots of polynomials (approx. grades 9-12) — Currently not running due to low enrollment. If you are interested in the Icosahedron sessions, please email expansions@momath.org.

Once accepted into the program, students may register for only their assigned class series and must register in advance.

Application process

Admission is by application only; past Expansions students must re-apply. At this time, applications will be accepted on a rolling basis as spots become available. Please email expansions@momath.org to check on the availability of spots in Expansions.


Due to limited capacity, participation in the 2017-2018 academic year will require full semester enrollment. The Fall 2017 semester runs from September 26 through December 28, 2017 (no classes during Thanksgiving week, November 20-24). The Winter 2018 semester runs from January 2 through March 29, 2018. The Spring 2018 semester runs from April 3 through June 28, 2017. Registration fees are $495 per semester (13 classes). Refunds will not be given for absences or for any other reasons.

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.


Workshops will run weekly starting on September 26, 2017 through June 28, 2018. No classes will run during Thanksgiving week, November 20-24, 2017. Classes will be held on all other dates throughout the year. No refunds will be given for absences due to any reason.


MoMath will make every effort to run classes as scheduled, but occasionally severe inclement weather or other 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 grade-level sessions will run only if a minimum number of participants is reached before the start date of the full session. In the rare event that a grade-level series 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, materials, and other resources based on registration. For these reasons, the Museum has a strict no-refund and no make-up policy.

Adult chaperones are required to wait outside the classroom during classes. In the event that a class is scheduled to end after 5 pm, adults must wait in Additions, the shop at MoMath, and students will be brought to Additions for dismissal.

All Expansions participants are expected to exhibit good behavior to ensure a positive experience for all participants. 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 provided.