Our staff is built to teach each student individually, to develop the skills they need to thrive in mathematics, and to foster a love of learning.

Geoff

Co-owner

Geoff is the Co-owner of Mathnasium of North Marietta. He earned a Bachelor of Commerce and a Postgraduate Diploma in Accounting from the University of Natal in Durban, South Africa. He also became a Chartered Accountant and passed the CPA exam after moving to the U.S. Geoff has always enjoyed math and believes it plays a vital role in everyday life. 

He has volunteered extensively with his children’s school PTA and values the importance of education. Geoff brings his strong financial background and community spirit to his work at Mathnasium. 

Dylan Downer

Curriculum Coordinator

Dylan has a passion for both math and design. She enjoys helping others understand math and believes every problem has a creative solution.  

A self-proclaimed math nerd, she’s memorized all the perfect squares up to 100! Her favorite number is 3, thanks to a family tradition of threes. Her math joke? “Math teachers have too many problems.” 

Jessica Wolwark

Instructor

Jessica is a senior at Kennsaw State University and a Public Health Major. She is on the KSU Women's Rugby Team and loves spending time outdoors. In her free time, she likes to kayak, hike, and go camping! Jessica has been a math tutor since 2020 and has been working at Mathnasium of North Marietta since May of 2024.

Favorite math joke: Why is 69 so scared of 70? Because they fought and 71!

Ash Nichols

Instructor

Ash is a sophomore at Kennesaw State University and an Elementary Education Major. In his free time, Ash likes to sing, hang out with friends, and do escape rooms with his family. Ash was a previous Mathnasium student for five years in Augusta, Georgia and has been working at Mathnasium of North Marietta since Janurary 2025. 

Favorite Math Joke: Are you an angle with a measure of less than 90 degrees? Because you're acute. 

William Kesler

Instructor

William is a student at Kennesaw State University majoring in Industrial & Systems Engineering and is majoring in Data Science and Analytics. Throughout his academic career, William has completed higher level math courses including Calculus 3, Linear Algebra, and Deterministic Decision Making Models. William enjoys working on cars, and spends time researching the automotive industry, where he plans to take his skills. 

William's favorite math quote is:
"Without data, you're just another person with an opinion."
- W. Edwards Deming

Our Mathnasium Mission

Teach children math so they understand it, master it, and love it. Math can change their lives, and they can change the world.

Quote Quote
What I love about Mathnasium is the ability to teach problem-solving skills and make math make sense, while also making a student smile.
Amber W., Mathnasium Instructor

Schedule Your Math Skills Assessment Today

Student using math cubes to solve fractions
Student working with a math tutor at a local math learning center

Want to join the Mathnasium team?

Are you interested in changing lives through math? We're looking for outstanding individuals with a high level of commitment who are passionate about teaching math. Find out if there's a Mathnasium position that's just right for you!

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