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 kindergarten through 12th grade, 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 K-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 5:00 pm.
  • Octahedron: For those who commonly find common denominators (approx. grades 5-6) — Tuesdays, 3:45 pm to 5:00pm.
  • Dodecahedron: For those with functional knowledge of functions (approx. grades 7-8) — Thursdays, 3:45 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, no later than the Friday before the desired class.

Application process

Admission is by application only.  The program is not currently accepting applications at this time.  Stay tuned for the application window to open in Fall 2017.


Spring 2017 tuition prices are per class or per entire session (12 classes).

Tetrahedron (K-2) — $45 per class or $450 per session
Hexahedron (3-4) — $60 per class or $600 per session
Octahedron (5-6) — $75 per class or $750 per session
Dodecahedron (7-8) — $75 per class or $750 per session
Icosahedron (9-12) — $75 per class or $750 per session

To attend a class, students must be registered in advance no later than 3:00 pm on the Friday before the desired class. All registrations must be completed online; the Museum will no longer accept registrations via phone or in person at Additions, the shop at MoMath.

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.

Spring 2017 classes run from Thursday, April 6 through Tuesday, June 27.


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, no refund will be provided.