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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:

Ms Holly

Holly Geiger, Center Director/Owner

Holly studied Biology with an emphasis in ecology and conservation at the University of Washington.  She took a job in the Information Technology field, which became her unintended career path for 15 years. Holly left the long hours and travel demands to raise her daughter. 

The parent of a student frustrated each night with math homework, Holly sought out resources to help.  After being referred to Mathnasium by a teacher, researching the Mathnasium method and seeing the positive influence it made in the lives of students, Holly decided to open a Mathnasium in her neighborhood. Now a whole community of 1st grade – College students can benefit from learning math in a way that makes sense to them, in addition to providing a resource for parents to stop the math homework struggle.

Mathnasium has hundreds of amazing success stories across the country as a result of the Inspiring Learning Environment, Teaching Style and Curriculum at Mathnasium! Let Mathnasium help your student begin their success story today! 



Ms. Angelica, Assistant Center Director

Angelica is a college student working on her degree in Finance. She has worked with students at various schools throughout the Peoria USD through the City of Peoria Recreation Department.  When she is not assisting with the daily operations of our center she enjoys hiking, reading and hanging out with friends. She also loves to bake.




Ms. Connie, Lead Instructor

Throughout her educational career, Connie has worked as a high school math teacher, high school principal, and community college campus president.

Connie taught every high school math course from Pre-Algebra through AP Calculus BC. She retired in 2007, but she didn't stay idle. Connie taught Calculus at a community college while working as a data analyst for the local school district. She moved to North Dakota and worked for the North Dakota Department of Public Instruction as a unit director in charge of overseeing all school operations throughout the state. Since her return to Arizona, she has worked as an educational consultant, and is now happily sharing her skill and knowledge to assist students at Mathnasium.



Mr. Cooper, Lead Instructor

Mr. Cooper currently attends ASU and is a part of the Barrett Honors College.  He is working towards his BSE in Biomedical Engineering with a minor in Mathematics. His favorite subjects are math (especially calculus), biology, and physics. He is passionate in math and loves helping people in all subjects. In his very limited free time, Mr. Cooper likes to relax, read, watch movies, hang out with friends, and play video games.




Ms. Sherin, Instructor

Sherin is a senior at BASIS Peoria. She is passionate about math and has taken both AP Calculus AB and BC.  She has experience tutoring in math ,chemistry and physics as a peer tutor at BASIS Peoria. When Sherin is not solving math problems, she loves to volunteer and compete in Model UN conferences.






Ms. Ally, Instructor

Ally is a senior at Mountain Ridge, the current valedictorian of her class, and is headed to ASU the Barrett Honors College to major in Mathematics in the fall.  She is  involved in marching band and played an instrumental role as section leader this year. Ally is excited to help our Mathnasium students learn math in a way that makes sense to them.





Ms. Sejal, Instructor

Sejal is a senior at Liberty High School.  Her favorite subject is Math, but more specifically Algebra and Trigonometry.  She has tutored students in many subjects including; math, chemistry and all levels of Spanish.  Sejal is currently on the varsity swim team at her high school and is an active volunteer at Abrazo Arrowhead Hospital.




Larry Martinek, Creator of the Mathnasium Method

Larry has spent his entire career finding a better way to teach math. From inner city 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 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.

While Larry is not an Instructor at our Center, he is a valuable asset we can call on to ask about specific students' scenarios for guidance and advice. This has helped to make visits more productive and enjoyable for many of our students. 


For more information about Mathnasium and

 how we can help your child check out our FAQ Page