Welcome to Mathnasium of Greenwich

My daughter enjoys going there.


My 2nd grader daughter loves going to Mathnasium. She was ahead of her grade level when she started, and she c...


Call us today for a free assessment

Give your child an edge with Mathnasium. Come in for a free, no-obligation assessment. Call: (203) 861-6284

Schedule Free Assessment

Contact us


  • 407 East Putnam Ave, Cos Cob
  • Greenwich, CT 06807
  • Call (203) 861-6284
  • Text (203) 861-6284

Hours of Operation

Instructional Hours

Mon-Thu 3:00PM - 8:00PM
Fri 1:00PM - 6:00PM
Sat 11:00AM-3:00PM
Sun Closed

Office Hours

View All Hours arrow

Already enrolled?

Log in

Hello. I’m Suneet, Center Director of Mathnasium of Greenwich, your neighborhood math-only learning center. We help kids in grades K-12 understand math by teaching in a way that makes sense to them.

We specialize in math-only instruction with a focused, caring, and fun learning approach that delivers results.
We proudly serve local communities and schools, including:

  • Old Greenwich
  • Riverside
  • Cos Cob
  • Byram
  • Greenwich
  • Greenwich Academy
  • Brunswick School



One-on-One Assessment

Our unique assessment pinpoints what each child already knows and what they still need to learn.


Customized Learning Plan & Goals

Our detailed plan takes your child step-by-step from where they are to where they need to go.


The Mathnasium Method™

Our proprietary curriculum and teaching method fosters skills that take hold and build upon one another.

Latest News & Posts

How This Teacher Disrupted Education With The Mathnasium Model Of Teaching

Feb 12, 2017 | Greenwich

Forbes recently published a beautiful article about our very own Chief Instructional Officer and Co-Founder, Larry Martinek.   How This Teacher Disrupted Education With The Mathnasium Model Of Teach Larry Myler ,   Contributo..

Find out how Mathnasium will work for your child

Answer a few questions to learn more

My child is...


Have questions? Contact us.

By clicking "Submit," you agree to receive recurring advertising emails, text messages and calls from Mathnasium and its independently owned learning centers about our offerings to the phone number/email provided above, including calls and texts placed using an automatic telephone dialing system. Consent to receive advertising text messages and calls is not required to purchase goods or services. Message frequency varies. Message and data rates may apply. Reply STOP to no longer receive messages. Email [email protected] for assistance. By clicking "Submit," you also consent to Mathnasium's Terms and Conditions of Use and Privacy Policy.

"My boys have made great progress in math this year!!"

— R.S.


407 East Putnam Ave, Cos Cob

Greenwich, CT 06807

United States