Mathnasium 8032 S Yale Ave, Tulsa OK 74136 (918) 574-2222 Ext. 1

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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:


Luke Schriewer, Center Director

 Luke is an Alum of the University of Tulsa where he studied physics and math with a pre-med emphasis.  Luke grew up in Washington, MO, a suburb of St. Louis, where he attended St. Francis Borgia Regional HS and where he spent his time playing soccer, band, and studying.  In his free time, he enjoys playing soccer, cycling, the occasional overly intense board game, and finding some random thing to learn about.  Through working at Mathnasium, he has found a love for teaching and the wondrous a-ha moment when a problem and solution come together.

Edgar Delgado, Assistant Center Director


Jerry Knoll, Lead Instructor

Jerry earned a BS-Mechanical Engineering degree from Texas Tech University. His career includes 28 years with Halliburton Services in Halliburton’s Equipment Design Engineering Department in Duncan, Oklahoma, serving as Department Manager for the last 10 of those years. A downturn in the oil industry led to a 12 year career with Northrup Grumman in Washington, DC and Oklahoma City under contract to the US Government, performing specialty vehicle specification design work and project management of specialty vehicle acquisitions. He has been active in church as a youth and adult teacher, Deacon, and Elder. 

Now retired, Jerry enjoys sports and travel, his wife, son, daughter, and 7 grandchildren. He helped his children and grandchildren understand math throughout their public schooling and being a Mathnasium instructor allows Jerry to continue to interact with and help students to understand that math can be their friend and lead to greater confidence in school and in life.

Gail Cobb, Instructor

Gail earned a B.S. in Chemical Engineering from the University of Michigan (Go Blue!).  Her first job was Quality Engineer for IBM in Tucson.  She then landed a position as a Research Engineer for Dowell, an oil well services company that was a division of Dow Chemical located here in Tulsa.  A downturn in the oil industry led to a move to Dallas where Gail again worked as a Certified Quality Engineer.  She and her team of engineers were responsible for implementing Statistical Process Control (SPC) in the manufacture of night vision equipment, and also designed and taught an SPC course to the Manufacturing department.   It was a very successful and rewarding experience.

 Gail took a 20-year break from engineering to be a stay-at-home mom.  Now that her two Holland Hall graduates are pursuing their college degrees, Gail is an empty-nester that has joined the Mathnasium team, and has found the teaching experience once again very satisfying and rewarding.  Gardening is a passion of hers, along with cooking.

Russell Spicher, Instructor

Russell is currently a Physics student studying at the University of Tulsa. Russell's background includes service as a U.S. Marine, a Financial Advisor, and as a technical recruiter for a private firm in Tulsa. When Russell was in grade school he had a hard time connecting with math, and as such he did not enjoy the subject. It took several years before he found a personal connection to math as he learned to invest in the stock market. Once that connection was made, his eyes opened to the great power of mathematics to solve all sorts of interesting problems of the universe. During Russell's time at Mathnasium he looks forward to sharing his passion for math with other students who may be struggling as he did during grade school.

Michael Samuelson, Instructor

Michael earned a BS in Chemistry from Oral Roberts University and an MS in Chemical Engineering and Technology Management from the University of Tulsa. His career has included over 36 years with Schlumberger in various positions of research, training, management and engineering. He has authored or co-authored numerous publications covering the technologies he’s worked with, including high temperature hydraulic fracturing fluids, proppant flowback control, environmentally friendly organic solvents, encapsulated (delayed release) fluid breakers and scanning electron microscopy evaluations of matrix acidizing. Following retirement from Schlumberger, he has been a substitute instructor at various schools including Francis Tuttle Pre-engineering Academy in OKC, Deer Creek and Edmond public schools and Tulsa Technology Center, focusing mainly on math, science and engineering courses. His main motivations during his career have been his faith and his family, along with an ongoing desire to help develop technical excellence in those he has the privilege to work with.

Michael and his wife Rachel raised four sons, and he now loves being a grandfather to their children, enjoying all the family activities that involves. He also enjoys reading and the occasional “family guy night” to go see a current movie. 

Kaden DeCamp, Instructor

Kaden is currently a senior at Jenks High School and plans to attend the University of Oklahoma in the fall of 2019. He intends to major in Biomedical Engineering with a minor in mathematics. He has experience in Calculus through Calc 3, Linear Algebra and Differential Equations. Kaden loves working with kids and enjoys serving his community through volunteering with Special Olympics at his school. His hobbies include reading, listening to music, and spending time with friends.  


Stefan Kuhn, Instructor

Stefan is a senior at Jenks High School and has taken math all the way through Calculus III and Differential Equations. Stefan will attend Purdue University in the fall where he intends to major in chemical engineering. He loves working with and helping kids of all ages and math levels. Stefan’s hobbies include reading, hanging out with his friends, and rooting for his favorite NFL team: the Kansas City Chiefs.



Ashwin Chandrasekar, Instructor



Brooke Beirute, Instructor




Teri Overton, Instructor



Co-Center DirectorGinger Lucas, Owner & CEO

Ginger holds a Bachelor’s degree from Bowdoin College in Maine, and an MBA from the Wharton School.  During her career, she has worked as a credit analyst for small businesses at Chemical Bank, and in direct marketing for American Express and AT&T.  She also worked as a financial analyst for Morgan Stanley until she joined Vane as the Center Director of the Broken Arrow Mathnasium in Tulsa.  After 7 years in Broken Arrow, she now oversees all 7 centers in the Tulsa and Kansas City areas.

Ginger loves math as well, particularly teaching younger students.  She has taught Sunday School, participated in many school related activities with her son David, including running Oklahoma’s largest used book fair.

Ginger likes to cook, walk, read, watch musicals and travel—and has also been to all 50 states and 9 Countries and loves to be by the water.   

CenterDirectorVane Lucas, Owner & President

Vane holds a BSE in Mechanical and Aerospace Engineering from Princeton University and an MBA from the Wharton School of the University of Pennsylvania. During his career, he has worked as a heat transfer engineer for IBM, a strategy consultant to leading financial institutions and he spent 17 years as the head of consumer strategy for Bank of Oklahoma.

Vane has loved math since he was a child and always dreamed of teaching math sometime in his life. In addition, he’s always viewed mentoring and teaching as a key part of his job and his life. He has always mentored younger employees under his supervision, he has taught Sunday School for several years, he coached youth sports, and tutored middle school and high school math students.

In addition to owning Mathnasium centers, Vane is also currently working as the head of Learning Center Systems for the entire Mathnasium network of more than 1,000 centers in North America.  He is responsible for curriculum, technology, training, and other business systems.

Vane and his wife Ginger have a grown son, David.   Vane has traveled to all 50 states and 12 countries. He loves reading, movies, computers and woodworking and he has been a contestant on Jeopardy!  

David Sandoval, Training and Operation Manager


David is a graduate of the University of Tulsa with a BA in History. While he still enjoys reading history, particularly the history of math and science, his career in education brought him back to his childhood love of numbers and math. David taught high school math in the Dallas area and has done extensive private tutoring for students in middle/high school. In 2013, after moving back to the Tulsa area, he discovered Mathnasium. While he began working at Mathnasium as an instructor, David decided to make Mathnasium a career because of the profound impact he saw in the Mathnasium Method to build students' skills and confidence. David served as a Mathnasium Center Director for nearly 5 years and has recently transitioned to a new role as Training and Operations Manager for our network of centers in the Tulsa and Kansas City areas. David works one-on-one with each new Mathnasium instructor to build understanding and confidence in the Mathnasium Method. 

In addition to his work at Mathnasium, David is an avid reader. He enjoys spending time with his friends who get together weekly for table-top games. He has fun experimenting with Latin flavors in the kitchen and loves being walking distance from the Riverside trail.