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.

Andre Bertrand

Andre is the owner of Mathnasium of Albany-Berkeley. Prior to opening his center, Andre was a Senior VP at iHeartRadio in New York City. With an Electrical Engineering degree from McGill University, he has worked for more than 25 years as an engineer in telecommunications and multimedia. Over the years, he has done extensive coaching, teaching, and trouble-shooting. Originally from Canada, Andre has lived in Germany, Panama, New York, and Texas. Since moving to the Bay Area a few years ago with his wife, a Cal Professor, and their two school-age children, Andre has become an active parent in the community. Realizing the need for more individualized attention and targeted learning in math, Andre decided to bring Mathnasium to the Albany-Berkeley area. He is committed to sharing his enthusiasm for math and to bringing the Mathnasium Method to the children in the community.

Jesse Stephens

Assistant Director
Jesse graduated from UC Berkeley in 2019 with a degree in molecular biology. He is currently pursuing a post-baccalaureate degree at UC Berkeley, intending to apply to graduate school in the next few years. Jesse spends his free time playing real-life quidditch, board games and poker.

Audrey Nordenholz

Audrey is a Junior at Albany High School who loves running, music, and cats. She loves that math usually has a straightforward answer and is extremely rewarding when you start to develop a real understanding for it. She is a runner on the cross country and track teams at AHS, along with a singer in Treble Chamber Ensemble. She is a chocolate lover and likes to spend time in nature.

Saadit Ahmed

Saadit is currently enrolled in his second year of high school at Albany High School. This is his first job, and so far he’s having a great time teaching children and learning alongside them. He was led to this occupation through his immense interest in math, and spends a good chunk of his free time online studying new theorems and ideas in the world of math. Besides that, he enjoys playing chess, playing video games, and hanging out with his friends.

Grace Xu

Grace is a junior at Albany High School enrolled in Precalculus Honors. Grace loves the challenge of working on math problems and the satisfaction of finding solutions. She hopes to help others better understand math so they can love it just as much as she does. Grace has experience teaching dance to younger students at Ahlan Dance. Other than math, Grace enjoys dancing, making arts and crafts, and spending time with friends and family.

Si-Jae Teh

Si-Jae is a sophomore at Albany High School currently taking Accelerated Math 2/3. She enjoys mathematics as there is always something new to learn---the "lightbulb" moment when everything finally clicks is such a satisfying feeling and never gets old. Si-Jae loves working at Mathnasium and helping students become even more mathematically adept than before; it feels wonderful when someone benefits from her help and advice.

Sabine Scott

Sabine is majoring in mathematics for Advanced Study at San Francisco State University and is currently taking real analysis and modern algebra. Sabine has two black cats, Millipede and Charcoal. Sabine likes playing bass guitar, painting, playing video games and working out.

Katherine Dhuey

Katherine studied mathematics at the University of San Francisco. She enjoys drawing, writing and reading. Her favorite course in college was real analysis, and she is also interested in philosophy, art, and nature.

Madeline Elizabeth Kester

Maddy is in her second year at UC Berkeley working towards an applied math degree. She loves the satisfaction that comes with solving a particularly difficult math problem and getting to learn about problem solving as a whole. In her free time, she loves reading, playing field hockey, and spending time outside.

Zoe Maderas 

Zoe is a high school student in Albany. She likes that math can help you solve real life problems, and that there often is more than one way to get to the solution. She enjoys helping students find new ways to get to the solution. In her free time, she enjoys dancing, biking, and making art.

Oliver Thompson

Oliver Thompson is currently a senior at Berkeley High School and taking AP Calculus AB. He likes problem-solving with math and like that math can be perfectly logical. He also enjoys teaching people about math. Besides this, he enjoys playing video games, reading manga, and playing Magic the Gathering.

Matt Schaulis

Matt studied philosophy at UC Berkeley and is still very confused. He has particular interest in minds and brains, non-classical logics and early modern philosophy. Now he spends an inordinate amount of time thinking about alternative comics, Dostoevsky novels and stodgy old art films. He enjoys working with kids and plans to become a teacher.

Josheph Son

Joseph is a student attending Albany High School and is currently taking AP Calculus AB. He enjoys the learning aspect of math when he completely gets a new concept and hopes through instructing that other people have the same experience. In his free time, he enjoys reading, going on runs, and skateboarding.

Ezra Son

Ezra is a sophomore at Albany High School enrolled in Math 2/3. He enjoys using the critical thinking and logical reasoning required to solve math problems. In his free time, he enjoys running the mile, playing the clarinet, and solving Rubik's cubes as fast as possible.

Hao Xu

Hao always found math the most exciting subject and later dwelled in the world of physics, as it is highly interconnected with mathematics. His interest in math and physics inspired him to study Aerospace Engineering at UC Berkeley. With much experience supporting friends with math problems through his K12 education, he found it very satisfying to elucidate those who were confused about the subject.

Harsheet Subedi

Harsheet is in his junior year at Albany High School. He enjoys listening to music, traveling and playing tennis. He likes math because its influence over many fields like science, engineering and finance.

Oliver Arkin

Oliver is a junior at El Cerrito High School. Some of his hobbies include playing the French horn, playing with his dog, and spending time with his friends. He has completed AP Calculus BC and is going to take multivariable calculus at a local community college soon. He has a passion for mathematics and hopes to major in it once he goes off to college.

Tiegan Nagafuji

Tiegan is a student at Albany High School where she enjoys learning alongside her classmates. As an instructor at Mathnasium, Tiegan finds satisfaction in helping students build solid strategies to solve math problems. Outside of school, Tiegan loves to spend time with friends and family, snowboard, golf, draw and read.

Suvanjan Sitaula

Suvanjan, a third-year student at Albany High School, is passionate about helping the next generation with math, aiming to make it relevant to everyday life. Outside of academics, he enjoys working out, listening to music, and spending time with friends. While math is his favorite subject, he also has a keen interest in computers.

Ella Shonk

Ella is a second-year at UC Berkeley pursuing a linguistics major, and studying math and statistics when she can. She's very interested in different languages, and comparing how different languages' different grammars and phonemes can form the same meaning in different ways, or convey a meeting totally unique to a particular language-- and that math is also remarkable(and linguistic) for its ability to convey and contain information. In her free time, she enjoys graphic novels and writing

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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