Welcome to mathnasium of South County

They are amazing! They have been flexible with my families crazy schedule, attentive to my daughters needs, he...

Bobby Underwood

My son currently has an A+ in eighth-grade math. He went from good at math to great – and far more interested....


Make Mathnasium part of your Summer

Now is the time to get Mathnasium on your summer schedule, as spots are limited. Summer at Mathnasium is a fun and engaging way for your child to keep up their math skills and prepare for the school year ahead: • Free assessment -> Individualized Learning Plan • Live, face-to-face instruction • A proven teaching method that results in true understanding and increased confidence.

Schedule Free Assessment

Contact us

South County

  • 38 Ronnie's Plaza
  • St. Louis, MO 63126
  • Call (314) 270-3891

Hours of Operation

Instructional Hours

Mon-Thurs 3:00PM - 7:00PM
Sun 1:00PM - 5:00PM

Office Hours

1:00PM - 3:00PM
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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:

  • Sappington Elementary School
  • Holy Cross Academy
  • Assumption Parish School
  • Thomas Jefferson School
  • Lindbergh High School
  • Home School Families

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

Kaitlyn is a passionate math instructor who finds joy through teaching kids how to excel with their math skills. She is currently pursuing a Bachelor of Science in Psychology with a minor in Nutrition with goals of earning a Master’s degree in School Psychology. Familiar with the statistical aspects(...)



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

Welcoming our Center Director

Feb 13, 2023 | South County

Find out how Mathnasium will work for your child

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"They are amazing! They have been flexible with my families crazy schedule, attentive to my daughters needs, helped with homework. 10/10"

— Bobby Underwood

South County

38 Ronnie's Plaza

St. Louis, MO 63126

United States

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