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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:

Our Team

Meredith Jones, Center Director

Meredith Jones and her husband live in Roanoke. Her two greatest passions are math and their dog, Sam. Meredith studied Meteorology at the University of Oklahoma for two years, and then decided to earn her degree in Mathematics in order to teach. She has taught 9th Grade Algebra I and tutored for many years.

Meredith is overjoyed to have the opportunity to share her passion with children of all ages. She loves explaining why things work the way they work and boosting every child’s self-confidence. She feels so blessed to have a job that she is so passionate about.

We are here to develop a child’s number sense and fluency; we will never answer a question with, “because I said so.”

Brian Pullen, Assistant Director

Brian, his wife Sara, and his son Jason moved to Texas in the summer of 2013. He has a bachelor’s degree in Mathematics Education from Northland International University and has experience teaching math from 5th grade to 12th grade. He has always possessed a passion for math and delights in seeing the understanding light bulb turn on for students and an appreciation of math begin to grow in them.

When not at the center, Brian loves to spend time with his wife and son. He also enjoys playing soccer, working Sudoku puzzles, and watching movies and JEOPARDY!. His goal is to honor God in all that he does, pressing on for the Lord through life.

“Know ye not that they which run in a race run all, but one receiveth the prize? So run, that ye may obtain. And every man that striveth for the mastery is temperate in all things. Now they do it to obtain a corruptible crown; but we an incorruptible. I therefore so run, not as uncertainly; so fight I, not as one that beateth the air: But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.” --1 Corinthians 9:24-27

Rick Mauderer, Instructor

Rick was born in Iowa and spent most of his childhood moving back and forth between Iowa and Minnesota. He and his wife have a 19 year old son who loves his drum set, and a 18 year old daughter who loves her French Horn (although he could swear it has a German accent to it!!) He remembers sitting in 9th grade Algebra class in a small town in Iowa looking at his Math teacher/Football Coach, thinking, “How can such a cool guy end up being a math teacher??” He then went on to earn a degree in chemistry with minors in physics and – you guessed it – MATH! He has taught high school physics, geometry, algebra, algebra 2, chemistry, environmental science, and physical science. He also teaches rock climbing and repelling, loves to scuba dive, and do a host of other fun and cool stuff.

Along the way, Rick has helped to direct a Christian adventure camp in Wyoming, having played guitar for over 40 years – even professionally, and being in a band voted best band in Tarrant County by the Star Telegram readers in 1999-2000. He has also been a youth and worship pastor, and is now a high school assistant principal turned district coordinator of technical projects. He is nearly finished with his PhD in Curriculum and Instruction, and will have a minor in statistics.

Fun Fact: Rick has 4 dogs, 2 cats and a snake? (no, we are not kidding!)

Becky Oltmanns, Instructor

Becky and her husband David have lived in DFW for the last 15 years, and in Keller for the past 3 1/2 years. She has two daughters, ages 6 and 8, and a chocolate lab named Lady Bird. Becky has a bachelor’s degree in Applied Mathematics from Texas A&M University.

She worked for two large consulting firms as a health and welfare actuarial analyst. She enjoyed helping her clients with their active and retiree benefit plans before deciding to spend six years at home with her children. Becky has always enjoyed math, and is excited at the opportunity to share her enthusiasm helping children. In her spare time, Becky enjoys spending time with her family, craft projects, tending to her flower beds and vegetable garden, and a daily game of Sudoku.

“Sometimes the questions are complicated and the answers are simple.” - Dr. Seuss

Maegan Garcia, Instructor

Maegan was born in Dallas, TX. She graduated high school in 2009 from Red Oak High School, and attended The University of North Texas for her first year of college. After her first year, she moved to Tyler, TX and transferred to the University of Texas at Tyler. She lived and went to school there for three years, and recently moved back to the DFW area to finish up her degree at The University of North Texas. She graduated with a BS in Mathematics with a minor in Economics in December 2014.

Math is definitely Maegan’s calling, and she is always eager to help others by sharing her knowledge on the subject. When Maegan is not at Mathnasium, she enjoys hanging out with her family, reading, and being outside.

"It is not enough to have a good mind. The main thing is to use it well.” – René Descartes

George Wood, Instructor

George grew up in Minnesota and loves the logic of math.  He graduated from the University of Minnesota with a double major in Business and Economics Education, which trained him to be a teacher.  He worked for over 40 years in the Finance Industry, mostly for the FDIC and various banks.  At one bank, his main area of focus was working with "problem loans," making him an excellent problem-solver.  He retired in June 2014 from the Dallas Division of Resolutions and Receiverships within the FDIC.

Currently, along with working at Mathnasium, George is the Treasurer and Trustee at his church.  He and Jean, whom he married over 42 years ago, have lived in Keller for the past 4.5 years.  Four of their six grandchildren and two of their three children live in this area, as well.  In each case, it is a 2/3 ratio!  

George especially loves working at Mathnasium because of the enthusiasm of the hard-working staff and students.  

Collin Singleton, Instructor

Collin has lived in Tarrant county for just over 20 years. He graduated from Carroll High School in 2011, and is now working on a Biology degree in the UTeach Program at the University of Texas at Arlington. Collin loves animals of all kinds, but thinks no dogs are better than his dogs, Snickers, ‘Nilla, and Sadie.

While working as a summer camp intern at the Botanical Research Institute of Texas, Collin discovered a passion for teaching, regardless of subject, and is always happy to see students learn. Outside of work, Collin likes reading Fantasy and Golden age Mystery novels, surfing the web, and hanging with friends.

“Education is the most powerful weapon which you can use to change the world.” ― Nelson Mandela

Collin Palmore, Instructor

Collin was born and raised in Wichita Falls. After graduating 27th in a class of 380, he went to College Station to attend Texas A&M where he majored in Mathematics during his freshman year. For his sophomore year, he transferred to the University of North Texas to continue his major in mathematics and to adopt a music minor.

When not in class or on the job, Collin enjoys video games, movies, cooking, furthering his math studies on his own, and attending meetings of UNT’s League of Pokemon Trainers.

“There is no such thing as hate, only the absence of love.”-Unknown

  Ben Shadrick, Instructor

 Ben Shadrick was born in Atlanta, Georgia and moved to the DFW area at the age of six. He        attended Coram Deo Academy in Flower Mound, Texas and graduated in 2011. He then pursued  Civil Engineering at Texas A&M University for one year, and then transferred to The King’s  University at Gateway where he is currently pursuing a degree in youth ministry.

Ben also has a passion for sports and all areas of living an active lifestyle. He spends a large portion of his free time in different areas of fitness, but primarily in the area of weight lifting. Ben has had a love for fitness ever since his senior year of high school when he lost 80 pounds over six months. He believes that the weight loss was only possible with God’s help and that God gets all of the glory!

“I can do all things through Christ who strengthens me.” – Philippians 4:13 

Shelby Sprague, Instructor

Shelby was born the youngest of 8 (much older) siblings in Waco, Texas, and graduated from a nearby small-town high school in Groesbeck, Texas in 2013. She is currently a student at the University of North Texas majoring in Development and Family Studies and double-minoring in Spanish and German. After a handful of years and grad school, she hopes to become a family counselor.

Shelby remembers a specific day in fourth grade when her math teacher Mrs. Tracy commended her hard work in front of the whole class. It was then that she took her confidence and drive and began competing in UIL Number Sense all the way through her senior year in high school. She's always loved learning why and how numbers work the way they do and being able to manipulate them anyway chosen. She loves helping students learn these skills and watching them master them one day at a time. 

"You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose. You're on your own. And you know what you know. And YOU are the one who'll decide where to go.." - Dr. Seuss

Hannah Meader, Instructor

Hannah Meader was born in Dallas, Texas and was raised in Southlake, Texas. She is a senior at Carroll Senior High School, and is involved in many clubs and extracurricular activities around her community! She is a member of Mu Alpha Theta math honor society at CSHS, and is also taking advanced placement Calculus BC and Statistics this year! As well as having a passion for math, Hannah also loves to play soccer. She plays for the school varsity team, as well as for a club team called Andromeda FC in the evenings!

Hannah has always had a passion for working with children, and is overjoyed to be able to work at a place like Mathnasium, where she can teach her favorite subject and interact with kids at the same time!

“ Peace I leave with you, peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled, and do not be afraid” John 14:27

Anthony Munson, Instructor

Anthony Munson is a senior at Carroll Senior High School this year. He thoroughly enjoys subjects that engage him intellectually, including, but not limited to, the fields of physics, philosophy, and mathematics.

In his spare time, he enjoys reading, running, and playing the viola. He hopes to one day use his passions for scientific research and teaching, and he currently takes an active role in independent math/physics study and his school’s physics club, which aims to imbue students both with valuable understanding and excitement about the subject.

“Normality is a paved road: It’s comfortable to walk, but no flowers grow on it.” ~ Vincent van Gogh

Callen DiGiovanni, Instructor

Callen was born in Fort Worth, Texas and has lived his entire life in Southlake, Texas. He is a sophomore at Carroll High and is a part of the Varsity Tennis Team.

Outside of Tennis, Callen participates in clubs such as Young Men’s Service League (YMSL) and Student Athletes Serving Others (SASO). He is currently enrolled in PAP Pre-Calculus and hopes to take AP Calculus AB, AP Calculus BC, and AP Statistics before he graduates!

Outside of school and tennis Callen loves to hang with his friends, spend time with families, and participate in events that are happening around the community. He is blessed by the fact he gets to work with such great kids at a place as wonderful as Mathnasium.

“Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough troubles of its own.” Matthew 6:34

Aneeqah Naeem, Instructor

Aneeqah Naeem has lived in Texas for 3 years, after moving from the Midwest at the age of 13. She currently attends Carroll Senior High School, and is involved in various activities. Aneeqah is on the Carroll Varsity Debate Team, part of the Senate for National Honor Society, and is also a member of the Carroll Medical Academy. She also participates in clubs such as Mu Alpha Theta and volunteers for various organizations across DFW.

In her free time, Aneeqah enjoys writing, reading, and spending time with her family. She has a passion for traveling, and one day hopes to travel the world. She loves spending time with young kids and finding clever ways to incorporate witty remarks into her teaching.

“Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.” -Neil Gaiman"

Kylie McBride, Instructor

Kylie is a senior at Southlake Carroll Senior High School. She has a sister, a brother, and a dog named Skippy who she loves to spend time with! She is involved with many clubs at her school, like the Fellowship of Christian athletes, and likes to volunteer around her community. Kylie is a member of Mu Alpha Theta, National Honor Society, and is a Green Jacket at Carroll Senior High School. She also loves soccer and is the Captain of the Varsity Carroll soccer team. Math is her favorite subject, and she is taking AP Calculus BC and AP Statistics this year! She wants to pursue a career in engineering.

In her free time, Kylie loves mountain biking, hanging out with her family, and reading! She has a passion for helping kids and is so happy to have the opportunity to teach her favorite subject and work with kids at the same time!

Joshua 1:9 “ Have I not commanded you? Be strong and Courageous. Do not be afraid; do not be discouraged, for the Lord your God will be with you wherever you go.”

“Courage, dear heart”---C.S Lewis

John Kriegshauser, Instructor

John was born in Grand Rapids, MI and raised in St. Louis, MO.  He has lived in Southlake for the past 12 years; during the school year he attends the University of North Texas.  Having tutored math and other subjects since early in his high school career, John has chosen to pursue a degree in Mathematics Education.  His dream is to become a Middle School Math Teacher after graduation.  

When not tutoring or studying, John loves basketball, golf, environmentalism, transcendentalism, Native American history and culture and the band “Linkin Park.”  Some fun facts about John: He participated in the UIL Number Sense and Calculator Applications and MathCounts competitions.

“Every generation laughs at the old fashions, but follows religiously the new.” – Henry David Thoreau 

Karen Roussos, Owner

Karen has a degree in Electrical and Computer Engineering and has worked for companies such as Intel Corporation and Texas Instruments. She is also an entrepreneur and has started other successful small businesses. They have 3 children.

Karen loves having a business that makes math enjoyable and challenging, yet still convenient for the parent. Karen believes that once a student truly understands and masters the key concepts of math, they will gain confidence in their math skills and increase their problem-solving and critical thinking skills.

We will help your child in our center, not send them home with more homework!