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

He enjoys learning again and is feeling more confident in his math knowledge every time he goes.


When a child loves to go to Math because tos fun, then you found the place to be!


Contact us

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

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 Teamgallery1

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

Camp Mathnasium: The Place to be this Summer

Mar 22, 2023 | Stone Oak Blog

Join us this summer for Camp Mathnasium, where your child will have a blast with math! They will learn face-to-face with trained math instructors, explore STEM-related activities, and play innovative, engaging math and critical thinking games!

Benefits of Attending Math Summer Camp

Mar 8, 2023 | Stone Oak Blog

Summer vacation can be a dangerous slippery slope for kids who aren’t kept engaged and active. Research shows students lose approximately 2.6 months of math knowledge over the summer due to the fact that many students don’t think about math as existing outside of the classroom. This leaves kids struggling to catch up in the fall.

Upcoming Events

Summer Camp - June 26th-30th
Jun 26, 2023 - Jun 30, 2023
"Math is Fun!" Summer Camp, Grades 1-6. Click "More Details" below to learn how to register!
Summer Camp - July 10th-14th
Jul 10, 2023 - Jul 14, 2023
"Math is Fun!" Summer Camp, Grades 1-6. Click "More Details" below to learn how to register!
More Events brn

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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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