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.

Ray Yeung

Center Director
Ray is a Registered California Professional Mechanical Engineer and currently titled Project Engineer with over 18 years of engineering consulting experience. With a varied background experience in Mechanical, Civil, Structural, Electrical, Computer, Programming, Flow Accelerated Corrosion, Digital Upgrade, Software Verification & Validation and Instrumentation & Control Systems engineering, Ray has held several responsible positions in domestic and foreign nuclear and pharmaceutical industries. He graduated from University of Wisconsin, Madison with a Bachelor of Science degree and University of California, Davis with a Master of Science degree; both in Mechanical Engineering. He is an active certified coach with the Catholic Youth Organization (CYO) Athletics and has been coaching different youth sports teams for the past three years.

Kobe Wijesekerea

Assistant Center Director
Kobe moved from Los Angeles to San Francisco two years ago and recently graduated from San Francisco State University with a B.A. degree in Pure Mathematics. He will continue to study there for a master degree. After that, he hopes to further his education towards a PhD and pursue a career in the field of Mathematics research. He has excelled in Math for most of his life and hold a deep passion for practicing and teaching it. He wishes to show the students he meets the same beauty he sees in Mathematics. When he’s not teaching or studying math, he enjoys playing video games and listening to music.

Helen Feng

Helen recently graduated from Abraham Lincoln High School in the class of 2023. With a keen interest in mathematics, she decided to become a tutor at Mathnasium a year ago. She enjoys sharing her passion for math with younger students. In her free time, she loves singing and dancing.

Simon Bordoli

Simon is a sophomore at the Urban School of San Francisco. He is the president of the school’s student-run investment club, a peer tutor for Mandarin Chinese, and a member of the Varsity teams for soccer and tennis. His hobbies include building Lego, reading science-fiction novels, and watching soccer. His favorite element of math is the importance of understanding the underlying concepts rather than simply knowing the correct answer—it is important to know why you’re right, not just that you are right. This approach encourages learning rather than memorization! He is excited to share his passion for math with Mathnasium students.

Madison Lok

Madison is a senior at the Nueva Upper School in San Mateo. She enjoys the logical order of math and hopes to help children better understand this process. Outside of academics, she enjoys doing and experiencing arts.

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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