Our Team at Mathnasium of Cy-Fair

John Labuda

John Labuda holds a B.A. in Mathematics, a Master's in Math Education, and an MBA in Accounting and Finance. After teaching math, he transitioned into business and finance, working as a CPA and in leadership roles across various industries. 

John brings both educational and business expertise to Mathnasium. He is deeply involved in the Cy-Fair community and has helped grow four successful Mathnasium centers alongside Cathy, serving local families for over a decade. 

Larry Martinek

Larry Martinek has dedicated his career to finding better ways to teach math. As a teacher and educational consultant, he created strategies and curriculum that boost student understanding and confidence. 

He developed the Mathnasium Method™, one of the most innovative programs in math education. While Larry doesn’t teach at the center, his guidance continues to inspire instructors and help students succeed.

Krista George

Krista George brings over 20 years of teaching experience in Cy-Fair ISD, HISD, and Tomball ISD. She earned her degree in Education with a math concentration from the University of Central Oklahoma. 

Krista is passionate about helping students grow their confidence and math skills. A numbers enthusiast, she finds meaning in everything math-related and loves seeing students’ smiling faces each day at Mathnasium. 

Jason Byun

Jason Byun is a math student at the University of Houston Downtown, working toward his goal of becoming a high school teacher. He enjoys reading, writing, and following sports in his free time. 

Jason loves the rewarding nature of teaching. At Mathnasium, he finds joy in helping students experience breakthroughs and build their problem-solving confidence, especially with the concepts that once felt out of reach. 

Tom Stiff

Tom Stiff is a computer programmer with over 35 years of experience. He has a degree in Chemistry from Miami University. He’s a natural-born Hoosier, an erstwhile Clevelander, and a nearly native Houstonian. His son Daniel is Assistant Director of Student Life at San Marcos Academy. His daughter Caroline is a senior at the University of Texas. In his free time, he enjoys creating websites. Favorite Number: 15. My birthday falls on the 15th. An interesting fact about me: I was born in Indianapolis. I love Mathnasium because It’s great fun to watch children’s mathematical abilities grow.

Betty Vogtman

Betty is a retired teacher, having taught 36 years in a private school, HISD, and CFISD. Her favorite subjects have always been math and science. She also tutors science during the school year. She is a mother of two grown children and her favorite number is 3, as it’s in all of her family’s birthdays, as well as her address and phone numbers (current and previous). Favorite math joke: Did you hear about the mathematician who is afraid of negative numbers? He will stop at nothing to avoid them. An interesting fact about me: I am a native Houstonian. “I love Mathnasium because the strategies taught are so sensible and helpful, and I enjoy seeing the students’ success in math.”

Courtney Lo

Courtney graduated from the University of Houston in Spring of 2022, where she received a Bachelor of Education. She hopes to finish her certification exams to become a full-time elementary teacher next year. Working at Mathnasium has given her so many insights into how important a math foundation is for children and she is excited to see the effects it has on kids! Her favorite number is 6 because it’s a perfect number in that 1+2+3 equals 6.