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.

Derek Lariviere

Center Director/Owner

Derek Lariviere is a retired Army Ranger Medic, He has a long history of coaching and teaching since 2002. He’s also a former ultra runner, youth coach, and a dedicated volunteer in the community.

Derek is passionate about helping students build confidence through math. As a father of three daughters, he’s committed to creating a nurturing environment where every child can thrive and discover their potential.

Alexander Ivanov

Lead Instructor

Alexander is currently pursuing a degree in Mathematics at the University of Oklahoma, with plans to work as a data analyst for the NSA after graduation.

Alexander brings a deep love for problem-solving and analytical thinking to his work with students. In his spare time, he enjoys chess, competitive video games, and reading—and even shares his home with a pet boa constrictor named Stanley.

Eloise Tucker

Insructor

Eloise is a junior at Norman North High School and an active member of the speech and debate team. Eloise was a Mathnasium student for eight years before joining the team as an instructor. 

She brings energy, empathy, and firsthand experience to every session, and she loves helping students grow more confident in math while building meaningful connections along the way.

Emma Stogner

Instructor

Emma is a senior Biomedical Engineering major at the University of Oklahoma. She also works as an undergraduate research assistant, conducting studies on nanogels in the BME lab. 

Emma applies her problem-solving mindset to teaching, helping students break down complex topics and gain confidence. She especially enjoys guiding students through those “aha!” moments when math finally clicks.

Mason Johnson

Instructor

Mason is a student at the University of Oklahoma, majoring in Physics with a minor in Mathematics. His strong analytical background and passion for problem-solving make him a great mentor for students looking to improve their math skills.

Favorite Number:  "My favorite number is 3 because it brings me good luck!"

Fun Fact: "I have a 2nd-degree black belt in Taekwondo."

Favorite Math Joke: "Why was 6 afraid of 7? Because 7 8 (ate) 9!"

Why I love Mathnasium: "Mathnasium creates an environment where students feel encouraged to learn and do math."

Finn Cash

Instructor

Finn is a student at the University of Oklahoma studying Petroleum Engineering, Geology, and Sustainable Energy Systems. Originally from Florida, he worked as a Mathnasium Instructor there for three years before joining the Norman team. In addition to his passion for math and science, he enjoys playing both the guitar and piano.

Favorite Number:  "42. The answer to life, the universe, and everything."

Fun Fact: ""I have triple citizenship with the U.S., New Zealand, and Canada."

Favorite Math Joke: ""Three logicians walk into a bar. The bartender asks, 'Does everyone want a drink?' The first logician says, 'I'm not sure,' the second says, 'I don't know,' and the third just says, 'Yes.'"

Why I love Mathnasium: ""I love math and being able to help kids understand important concepts they have been struggling with."

Cooper Wooten

Instructor

Cooper earned a degree in Astronomy from the University of Colorado, Boulder, and has completed graduate coursework at the University of Oklahoma. He has a deep appreciation for film, animation, and video games as artistic mediums and enjoys analyzing and understanding them on a deeper level.

Favorite Number:  "The imaginary number i. It's fascinating how something as seemingly absurd as 'imaginary numbers' can be so valuable in describing oscillations and quantum mechanics."

Fun Fact: "My sister and I have birthdays one day apart, but we aren’t twins."

Favorite Math Joke: "That one XKCD comic."

Why I love Mathnasium: "I love to teach math, and here at Mathnasium, I get to do just that."

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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