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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:

CenterDirectorTootsie Bellittera, Center Director

Tootsie brings nearly 20 years’ experience in management, customer service and marketing to the Mathnasium team; most recently serving as managing director of an immersive school for software engineering.

Her passion for learning, personal development and mentoring led her to Mathnasium, where she thrives on helping our students reach their potential, gain self-confidence, and have fun along the way!

“I wish we had Mathnasium when I was a kid. I remember being so confounded by Math that it intimidated me into adulthood. I truly believe that the Mathnasium Method not only provides children with a foundational understanding of math in an easy-to-understand way, but it instills a confidence in them for having faced a fear and overcome it. That’s an achievement they will carry with them for the rest of their lives.”

Tootsie has a B.A. in Communication from Bowling Green State University, and continues her education by taking a wide range of classes including Improvisational Comedy and Italian. Born and raised in Rochester, NY, Tootsie dreamed of living in the San Francisco Bay Area and is proud to call Marin home. She loves the 49ers, travel and trivia.  


Abby Floyd is a senior at Sir Francis Drake High School who is looking forward to college next year. She is a part of the film program at her school, and hopes to study computer science in the future. In her free time, she plays piano, participates in theatre productions, and plays softball. She is excited to help kids with math at the Mathnasium!

Abby F., Instructor

Abby is a senior at Sir Francis Drake High School who is looking forward to college next year. She is a part of the film program at her school, and hopes to study computer science in the future. In her free time, she plays piano, participates in theatre productions, and plays softball. She is excited to help kids with math at Mathnasium!



Geddy P., Instructor

Geddy is currently a Sophomore attending College of Marin working to complete an Associate Degree in Mathematics with hopes of transferring to a 4-year school in the Fall/Spring of 2017 to complete his Bachelor’s Degree. Geddy has worked with students since high school through mentoring, coaching, and refereeing in athletics while also tutoring Algebra 1 & 2. His hobbies include basketball, music, reading, and computer programming. Geddy is excited to join the Mathnasium team.



InstructorBobby D., Instructor

Bobby grew up in San Anselmo and is currently finishing up his Bachelors in Mathematics and Computer Science at Oberlin College. During his time at Oberlin, he fell in love with mathematics got a chance to teach and tutor students in the subject. Bobby spent the past summer in Budapest working with Hungarian mathematicians and learning how to present difficult information in a clear and concise manner. He is currently adapting his thesis for publication in a mathematics research journal. When not doing mathematics, he enjoys playing guitar and singing, as well as hiking and spending time with friends and family. 


InstructorEmily W., Instructor

Emily received a B.A. in Liberal Studies with a focus on Mathematics Education from Dominican University and a Master's in Computational Decision Analysis from Golden Gate University. She also holds a number of AA degrees from College of Marin including Computer Science, Business Accounting, Dance and French. She is currently an Experience Corps reading tutor and an origami instructor with the East Bay Origami Convention, and an artist whose art work has been sold at MarinMoca's Altered Book Show and Gallery Route One's Box Show. 




Setara I., Instructor

Setara is a third year civil engineering student at College of Marin aiming to transfer Fall 2018. She is currently enjoying learning the applications of her math and science classes and is looking forward to further advancing those skills. Setara is excited to join the Mathnasium team and help kids develop their mathematical understanding and confidence. In her free time she is hiking, running, and gardening.



InstructorDylan F., Instructor

Dylan is a Senior at Drake High School who loves his Calculus and Physics classes. When not doing math, Dylan spends most of his time mountain biking around Marin. He is super excited to help kids get a stronger grasp on the concepts in math and be part of the Mathnasium team!




Ella B., Instructor

Ella is a senior at Branson High School and her favorite classes are Calculus, Economics, and Biotechnology. She loves working with kids through teaching ballet classes and many years camp counseling, and she is very excited to help kids build a strong math foundation and gain confidence. In her free time she loves to do ballet and has been on her school's soccer and track teams. 




Ben M., Instructor

Ben is currently a junior at Branson High School and loves his Calculus and Biology classes. Outside of school, Ben plays tennis, runs cross country, and plays the violin. He is excited the join the Mathnasium team and help kids love math as much as he does.





Bob C., Instructor

Bob had a 35 year career as an engineer and project manager. He graduated from the University of Washington in Seattle in 1968 majoring in Aeronautical Engineering. After college, Bob served four years in the US Navy Nuclear Submarine Program. His working career included nuclear power plant engineering and design, quality control and process improvement, and information technology project management. For the past six years, Bob has been a volunteer in the Marin County School Volunteers program, tutoring math for a fifth grade class at the Bahia Vista School.  Bob is married, has five Grand Daughters, and lives in Fairfax. He enjoys hiking, doing art work, gardening, being with his family, and rooting for the Warriors. 




Karen U., Instructor

Karen started her career after graduate school as a telecommunications engineer. She decided that talking to a computer all day wasn't her style and thus she went into teaching. She loves the interaction with the students and parents and finds joy in the success of the students. Karen also spent 10 years living in Spain and speaks Spanish and understands cultural differences. All three of her now adult children are fluent in Spanish and involved in math/engineering studies/careers. 





Taylor E., Instructor

Taylor is a freshmen at Dominican University studying to get her Bachelor's of Science in Chemistry. She has always enjoyed math and took up to Calculus in high school, but found her classes such as Chemistry and Physics more interesting because it had more of a real world aspect to them.  At Dominican, Taylor is also a part of the school's Honor Program, and on the Women's Soccer team.  She is very excited to be a part of the Mathnasium team.




Steve Santacruz, Owner

Steve graduated from DePaul University from the Honors Accounting Program with a Bachelor of Science in Accounting and later received his law degree from DePaul. One of Steve's main passions in life is teaching children. He has been a little league baseball coach since college and enjoys coaching his own two boys in baseball. Steve brings that passion to Mathnasium - hoping to influence and enrich the lives of children through nurturing a passion and appreciation for math. Most students simply need more focused instruction in order to excel. "The Mathnasium method achieves this and much more, due to the richness and breadth of the Mathnasium curriculum. It is the ideal adjunct for a student's daily classroom instruction, whether the child is struggling or advanced." Through Mathnasium, Steve is excited about being able to teach math to children in a way that makes sense to them. He also looks forward to teaching children the importance of strong study skills, which will serve them in subjects beyond math as they make their way through high school and on to college. Steve and his wife, Karen, are busy raising two sons, Austin and Dylan. They look forward to serving your family!


CenterDirectorChris Lee, Owner

Chris graduated from The Georgia Institute of Technology with a Bachelors of Science in Industrial Engineering in 1996. Upon graduation Chris spent six years in the Atlanta electronics industry. He headed back to Georgia Tech in 2002, where he went on to earn his Master's in Business Administration. Chris's main passion in life is teaching children, as exemplified in his roles as a Math tutor, Swim, baseball, softball, and basketball coach and Sunday school teacher. Chris has played a key role in setting the strategic direction of Mathnasium HQ since opening his first center in 2005. He has been a part of the leading franchisee committee since 2010 and plays an instrumental part in curriculum development. Chris currently serves as Chairman of the Board at Bridgeway Christian Academy. Chris and his wife, Holly, have three children, Aubrey, Faith and Hudson.