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Mathnasium 10543 4S Commons Drive, #175, San Diego CA 92127 (858) 312-8888

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It's always sunny in San Diego!


PTA + Mathnasium = Awesome MATH NIGHTS

We put the "M" in STEM for the STEM+Families initiative!  Mathnasium of 4S Ranch is proud to announce that we have joined forces with National PTA as a partner in PTA's nationwide science, technology, engineering and math (STEM) education and familyinitiative.  We are and will continue to be enthusiastic supporters of community schools and parent leader organizations for the benefit of all students. Call us to schedule a Math Night event at your school!


Annual TRIMATHLON Math Competition for 2nd-5th graders

Every October/November our center hosts a fun math competition designed for 2nd-5th graders that challenges them on three different categories, including mental math. There is no fee, and any student in the community may participate. The best part is, every participant sees how fun math can be, earns $10 for their school, and takes home a goodie bag!   Details coming early this fall for date and time. Registration will be required. Once registration opens, students can sign up at :  //


Have an upcoming school fundraiser or sponsorship event?

Have a special event at your school?  Tell us about it!  Contact Libby, our Director of Operations, to discuss how we can be a part of your team and fundraising effort. We are community and school focused and would love the opportunity to partner with your campus.  Libby can be reached at

Supporting Our Community:

As an educational partner, we are proud to support our community schools with our time, talent and treasure:

  • Stone Ranch Elementary Fun Run
  • Del Sur Educational Foundation
  • Monterey Ridge Elementary Fun Run
  • Monterey Ridge Back to Summer Family Carnival
  • Del Sur Elementary Math Night
  • Poway USD Foundation
  • Silent and Live Auction items for school fundraising
  • 4S Ranch Soccer Association