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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:

Anna Maddela, Center Director

Anna has been with Mathnasium since April of 2016 while serving as Center Director of Mathnasium of Yorba Linda. She graduated from the University of Southern California with a B.S. in Economics/Mathematics. While in college, she volunteered with the Joint Educational Project, where she taught basic financial literacy as part of a mini-group and tutored students in math at local middle schools. Throughout high school and college, Anna tutored students of all ages.  In her free time, she likes to go to concerts and rewatch her favorite TV shows.



Mikael Agopian, Instructor

Mikael is currently studying mechanical engineering at Cal Poly Pomona. He chose to study mechanical engineering because he wanted to create things that could change the world. He enjoys doing math and using critical thinking to solve problems. Math has been one of the most interesting subjects for him and he hopes to help others understand how math fits into life. If Mikael isn’t working on engineering work you can find him playing ultimate frisbee, hiking, and playing video games.


Ethan Baumbach, Instructor

Ethan studied Mechanical Engineering at Cal Ply Pomona. He wanted to study mechanical engineering because he loves doing math and wants to apply his math skills to the field of engineering. He is enthusiatic about working at Mathnasium because he likes teaching and helping kids. Other than working on math he enjoys rock climbing, swimming, playing ultimate frisbee, and hanging out with friends.


Avital Hershtik, Instructor

Avital has earned a Bachelor's degree in Business Management at California State University, Northridge.  She has a passion for math and helping students understand while making it fun.  In her free time, she enjoys going to Disneyland.  She is excited to help students in all grade levels find the fun in solving math problems.




Scott Nguyen, Instructor

Scott graduated from UCSD with a B.S. in Mathematics and Computer
Science.  He has a dog and two pigs and his goal in life is to provide
for his family and his pets.  In his free time, Scott enjoys hiking
and traveling.



Sean Oh, Instructor

Sean is currently getting his masters in teaching at the University of Southern California. He graduated from UC Davis with a Bachelor’s degree in Microbiology. Microbiology interests him because it is a new field of study that still has a lot of unknowns, and Sean finds the unknown fascinating. He pursues his interest in Microbiology by also working at Valeant Pharmaceuticals as a Quality Control Microbiology associate. Sean is excited to be working at Mathnasium to further his future goals of becoming a high school teacher. In his spare time, he enjoys listening to music, being in the outdoors, and is an avid swimmer.

Sierra Thomas, Instructor

Sierra is currently studying Physics at California State University, Fullerton.  She likes studying physics because it is a way to apply math to the world around her.  She is thrilled to share her passion for math and learning with students of all ages.  In her free time she likes reading books, watching movies, going to Disneyland and the beach.



Brian You, Instructor 

Brian is a sophomore at Calpoly Pomona, majoring in Electronic System Engineering Technology. Brian enjoys reading books about Greek mythology, playing basketball and hanging out with his friends. He also loves meeting new people and looks forward to working with all of the students at Mathnasium. Brian loves music, and plays the bass guitar in his free time.


We can't wait to Make Math Make Sense for your child!