Welcome to mathnasium of Stone Oak
Welcome to mathnasium of Stone Oak

My son loves learning there as has a great time every time he goes. He has gained a lot of confidence in his m...


Great instructors, fun place to learn, flexible schedules, friendly environment, clean and inspiring facility ...

Mary Peterson

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Stone Oak

  • 19903 Stone Oak Parkway, #105
  • San Antonio, TX 78258
  • Call (210) 399-3151

Hours of Operation

Instructional Hours

In Center or Online By Appointment Only
Mon - Thu 3:00 PM - 8:00 PM
Saturday 10:00 AM - 2:00 PM
Sunday (in center only) 1:00 PM - 4:00 PM

Office Hours

Call for Information
Daily, 9:00 AM - 9:00 PM
Center Director
By Appointment Only
Mon - Thu
2:00 PM - 8:00 PM
10:00 AM - 2:00 PM
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Hello! I'm Stephanie Harkiewicz, Center Director of Mathnasium of Stone Oak, your neighborhood math-only learning center. We help kids in grades K-12 understand math by teaching the 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:

  • Stone Oak
  • Far North Central San Antonio
  • Timberwood Park
  • Hollywood Park

Dedicated to providing the best instruction

Our instructors are enthusiastic about math and specially trained in the Mathnasium Method. They create a caring and encouraging environment where your child will learn and thrive!

Meet the Team gallery1

Instructor Spotlight

Stephanie Harkiewicz

Stephanie studied at the University of the Incarnate Word pursuing a degree in Mathematics and a Minor in Special Education. After graduation, Stephanie taught various levels of mathematics on the middle and high school levels for five years. She worked as an insurance agent for 2 years after, be(...)



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

Back to School Anxiety: Math Edition

Aug 25, 2023 | Stone Oak

It's that time of year again -- back to school season! Last blog post, we spoke about the anxiety kids can have regarding returning to school and gave 5 tips to help minimize this feeling. This blog post will focus on the anxiety kids may be feeling regarding math specifically.

4 Tips to Reduce Back to School Anxiety

Aug 11, 2023 | Stone Oak

Returning back to school after a long break can induce anxiety in some children. Whether it's starting a new school year or going back to the same routine, anxiety can make the transition challenging for both children and their parents. However, there are ways to minimize kids' anxiety about returning to school.

Find out how Mathnasium will work for your child

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Stone Oak
  • 19903 Stone Oak Parkway, #105
    San Antonio, TX 78258
  • United States
  • Call (210) 399-3151
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