Our staff is built to teach each student individually, to develop the skills they need to thrive in mathematics, and to foster a love of learning.

Spencer Benner

Center Director
Spencer attended the University of Central Florida where he completed his bachelor's degree in Art History. Prior to joining the Mathnasium team, Spencer tutored students for 2 years in high school and discovered his passion for teaching and connecting with students. He joined Mathnasium to continue teaching throughout his time in college. Since joining us, he has grown from instructor to Lead Instructor to Assistant Center Director, and now, to Center Director. He has built strong relationships with our students and families by building strong mathletes of all ages, growing our school and community partnerships and demonstrating how to make math make sense in fun, rewarding ways. Spencer is truly an example of how Mathnasium is changing lives through math.

Aris Stapleton

Office Manager
Aris is a former preschool teacher who loves working with children and has a passion for shaping their futures in the most positive way she can. During high school, she was captain of the Color Guard team where they won multiple state championships and were world finalists. Aris enjoys reading and writing, and in 2017 she got her Scuba Diving license and it has become one of her favorite activities to do. She believes that math is the foundational building block for educational and professional success and loves to help our children build confidence for all of their educational goals.


Lead Instructor
Vanessa is a current sophomore at the University of Central Florida and is studying Psychology-Neuroscience. She hopes to one day attend medical school and become a psychiatrist. Although she always loved school, math was always her favorite subject and enjoys bringing her passion to the children who come to Mathnasium. Apart from math and psychology, she also loves performing and went to a performing arts high school for musical theatre.

Amanda Gisel

Area Manager
Amanda has been a part of the Mathnasium family since 2014. She enjoys bringing math knowledge, understanding, and fun to the local community. Amanda has a Bachelor of Science degree in Biology from the University of Central Florida and has years of experience working with schools, children, and education. Some of her favorite hobbies include watching TED Talks, traveling, and interacting with animals. Amanda loves working with children of all ages and watching the light bulb illuminate in their eyes when a concept "clicks" for them.

Juli Williams

Director of Operations
Juli has been with Mathnasium since 2017, with 12 years of management experience and 10+ years of experience working with students. She earned a Bachelor of Science Degree in Marine Biology from Florida Atlantic University. She loves working with students of all ages, and often says she herself is a child at heart! Her hobbies include running, reading, and loving all things Disney.

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Our Mathnasium Mission

Teach children math so they understand it, master it, and love it. Math can change their lives, and they can change the world.

What I love about Mathnasium is the ability to teach problem-solving skills and make math make sense, while also making a student smile.
Amber W., Mathnasium Instructor

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Want to join the Mathnasium team?

Are you interested in changing lives through math? We're looking for outstanding individuals with a high level of commitment who are passionate about teaching math. Find out if there's a Mathnasium position that's just right for you!

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