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Mathnasium 10350 Bandera Rd, #304, San Antonio TX 78250 (210) 684-6284

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NOW OPEN! for in-center instruction, in additional to offering our online instruction through Mathnasium@home!

Our Team

Our specially trained math instructors will teach your child how to understand math in an individual setting; our unique approach enables us to explain concepts really well and lend a helping hand to every student. Our tutors foster a caring, encouraging environment that helps kids thrive and learn! Read below to learn more about our talented team:


Jon DuPree, Center Director

Jon has worked with students for over a decade, first in the golf industry teaching the game he loves. He also spent three years working for Southside ISD as a co-teacher and tutor in the subject area he loves, MATH! For the past four-plus years, Jon has been leading the team here at Mathnasium of Northside San Antonio.

Jon is married with two children and enjoys spending his free time with his family.





 Center Staff



Payton Davis, Assistant Center Director

Payton is a senior at Texas A&M University-San Antonio studying biology. After graduating, she hopes to attend graduate school and study cell & molecular biology. In her free time, she enjoys reading & playing music!  

Favorite number: 13
Fun fact: I can play 5 instruments!
Favorite math joke: Why did the Romans think algebra was easy? Because X is always 10!
In 5 years I will be: In 5 years I will hopefully be towards the end of earning my Ph.D. and looking toward the next chapter in my life.
I love Mathnasium because: I understand how vital it is for students to build confidence in themselves. We have an opportunity to teach students how to have confidence in their own abilities and to carry this confidence into other areas of life.





Karen Carter, Lead Instructor 

Karen is a recently retired math teacher with a degree in education and a concentration in mathematics. In her free time, she enjoys walking, playing with her numerous pets, crafting, baking, solving logic puzzles, and of course, spending time with her husband and daughter.


Favorite Number: 7


Fun Fact: I was born in Las Vegas and spent my childhood in England, Wales, and Scotland.


Favorite Math Joke: Why is 6 afraid of 7? because 7 8 9.


In five years I will be: I will be looking for my next adventure!


I love Mathnasium because: I get to continue with my vocation and passion... teaching the joy of mathematics to some wonderful young people.








Liana Garcia, Instructor
Liana is currently a senior at the University of Texas at San Antonio studying Electrical Engineering. She is involved in IEEE (Institute of Electrical and Electronics Engineers) as well as a robotics club. In her free time, she enjoys playing video games, painting, and spending time outdoors.  
Favorite Number:  8
Fun Fact: I have a slight hearing loss in my left ear. 
Favorite math joke:  How do you stay warm in any room?
Go to the corner, it’s always 90 degrees!
In 5 years, I will be: Pursuing a career in electronics engineering, hopefully involving robotics. 
I love Mathnasium because: I believe anyone can be great at math with the right attitude and instructors who care as Mathnasium provides! I hope to inspire other girls to pursue a career in STEM. 






Jocelyn Espinoza, Instructor 

Jocelyn is a first-year Psychology student at UTSA. Her favorite subjects are precalculus and algebra. She spends her time studying, drawing, shopping, and cooking. 


Favorite Number: 6


Fun Fact: I have a pet tortoise named Twoddles


Favorite Math Joke: My password is always the last 7 digits of pi


In five years I will be: In graduate school working towards a career in psychology living with my future pet corgi.


I love Mathnasium because: It provides me with the opportunity to practice the subject I adore the most and help others love it as much as I do!














Lindsey Matthews, Instructor 

Lindsey has a degree in environmental science from Virginia Tech. In her free time, she enjoys volunteering at the government canyon recreational area and spending time with her husband and two dogs.  


Favorite Number: 18


Fun Fact: I've driven across the United States twice.


Favorite Math Joke: Why do plants hate math? Because it gives them square roots.


In five years I will: (hopefully) be in graduate school. 


I love Mathnasium because: I think it's important for kids to have a good math foundation. I knew several people who couldn't complete their chosen major in college because they were not able to pass an advanced math course.









 Austin Carillo, Instructor

 Austin is a person who thinks math shouldn't be boring to learn. He is currently studying engineering at UTSA.

Favorite Number: 5, it's such an easy number to do multiples for.

Fun Fact: I got my very first "C" in college.

Favorite Math Joke: What is a ruler's dream? To rule the world!

In five years I will be: an electrical engineer

I love Mathnasium because: they allow students to learn new techniques to approach problems if the older techniques taught in school don't work for them.

















Luke Olivarez, Instructor









Ann Sawyer, Instructor

Ann is a wife of 36 years, a mother of three children: two adult daughters, and one 14-year-old son; and a grandmother of one grandson. She is also a certified math teacher and has taught 7th and 8th-grade math. In her spare time, Ann enjoys mind puzzles, swimming, and learning the cello.


Favorite Number: I have no favorites, but I like to draw pi. I appreciate that it never ends and never repeats; we should also keep going: don't give up.


Fun Fact: I'm good at both math and art, so I'm equally split between the right brain and the left brain. One reason I like geometry lessons is that I like to draw figures.


Favorite Math Joke: What's the best angle? The TRY-angle!


In five years I will: have more grandchildren and plan to continue to enjoy life with my family and friends, and teach math.


I love Mathnasium because: I enjoy teaching mental math skills to children. This is a lost skill because of today's reliance on technology. people develop confidence in Math by knowing how to do it on their own. Most high-paying jobs require a high level of math skills, so children who develop this ability are increasing their potential to succeed in post-secondary education and in life.

John Thomas (JT), Instructor

John, or JT, was an electrical engineering student at Texas A&M and UTSA. He is also a swimmer at the Alamo Masters Swim Club. He loves everything to do with water, being outdoors, and enjoying nature.


Favorite Number: The golden ratio, phi, or 1.618, because it appears naturally all over the world.


Fun Fact: I enjoy partner dancing. East coast swing, two-step, and waltz to name a few.


Favorite Math Joke: There are 10 types of people in the world. Those who understand binary and those who don't.


In five years I will be: I will be a licensed and working aircraft mechanic, living in some of the most beautiful places in the world.


I love Mathnasium because: math is one of the most important subjects in my opinion. It gives students situations that they need to break down, understand, and solve a problem with the tools they have learned. Problem-solving is such an essential skill for getting anywhere in our modern, complex world.












Inactive Instructors

Reillan Sawyer, Lead Instructor

Reillan Sawyer is a Senior at UTSA majoring in mechanical engineering. He received his associate's in mathematics from Northwest Vista College with a 4.0. He enjoys cooking, running, and playing the piano.

Favorite Number: 19

Fun Fact: I can juggle apples and eat one at the same time.

Favorite Math Joke: A mathematician walks into an ice cream shop and asks for 10 times as much ice cream as everyone else. The owner says "wow, that's an order of magnitude!"

In five years, I will be: Graduated from college and working as an engineer.

I love Mathnasium because: I can make a difference in student's lives and share my love of math


Center Owners:  Rick and Amy McLaughlin

Rick McLaughlin

Rick moved to San Antonio in 2000 and spent 8 years with USAA. He has also spent time as a college professor, teaching various business courses to adults and has also counseled numerous families on budgeting, facilitating such courses as Financial Peace University and Good Sense Budgeting. In addition to owning this Mathnasium location, Rick is involved in other business ventures. Outside of work, Rick is active in the community and his church. 


Amy McLaughlin

Amy is a certified teacher currently teaching within NISD. She is a graduate of Southwest Texas State University and has over 15 years experience teaching children. Amy is passionate about teaching and providing children the best possible learning environment. As a mother of two boys, she understands both the learning needs of children and the needs of parents in supporting those learning needs.  



Larry Martinek, Creator of the Mathnasium Method

Larry has spent his entire career finding a better way to teach math. From inner city to public schools, to acclaimed magnet schools, to leading private and parochial schools, Larry has served as both a classroom teacher and as an educational consultant. He has designed curriculum, teaching strategies, and teaching materials designed to help students and teachers learn math more effectively, He has trained teachers in the art and science of boosting students' ability to "do" math, thereby increasing students' math scores and feeling of self-worth. Larry is the developer of Mathnasium's educational program - one of the most comprehensive and innovative curriculas ever produced for teaching math.