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.

Zack Moore

Assistant Director
Hey everyone! I'm Zack, a college student from Potomac, Maryland! I am currently pursuing my Computer Science degree at Western Governor's University, which I attend fully online. My favorite numbers are 5 and 8, because they were lucky numbers I grew up with. When I'm cooking, I try to use either 5 or 8 cloves of garlic per dish. Some say that's a lot, but can you really have too much garlic? In my free time, I like to tinker with my home server, go for hikes, and this year I've started gardening! I speak English, some Mandarin, and I've started learning Korean recently. Come on in and ask me about any of my hobbies!

Sarah Goldschmidt-Hopkinson

Lead Instructor
Hi! My name is Sarah. I'm a senior at Winston Churchill High School and look forward to starting college in the fall! I plan to pursue English and Education and to spend this summer playing guitar and hanging out with family. My favorite number is Pi, but don't talk to them because they'll go on and on forever.

Constance Sutter

Hi, my name is Constance. My education is in mathematics, psychology & philosophy, and I’m attending McDaniel College to earn my Master’s in Clinical Mental Health Counseling. My favorite number is 7, as I love the pattern it generates when you divide any integer by it—too cool! My first language is Greek, and my primary hobbies are weightlifting, reading and writing literature, and playing music!

Arvin Adeli

Hi, everyone! My name is Arvin. I am a senior at Winston Churchill High School, and I plan to study Computer Science and Engineering in college. I love all kinds of music but I especially love classical music since I play both the piano and cello. I also enjoy playing tennis, reading, and constantly 3D printing things. My favorite number is -7, since I was born in July and I've always thought negative numbers were pretty cool, but if I were to tell you my ABSOLUTE favorite number, I'd say it would be the number 7.

Rian Treistman

Hi I'm Rian. I attend Quince Orchard High School and will pursue business in college. My favorite number is 13 because it is the number of my favorite basketball player, Paul George. A fun fact about me is that I like to play soccer. How do you make seven an even number? Remove the "s."

Michael Holder

Hi I'm Mike. I go to Winston Churchill High School. When I go to college I plan on pursuing either Mathematics, engineering, or finance. My favorite number is 1 because it is very versatile in math and is the number from which all other numbers come. Some of my hobbies are, running track, cross country, watching movies and playing the drums.

Ryan Cheriathundam

Hi I'm Ryan! I am currently in 11th grade at Walt Whitman High school and thinking about pursuing a major in chemical engineering or computer science. I enjoy cooking, working out, and playing or watching sports(I am a DC sports fan). A fun fact about me is that I used to wear sports goggles throughout elementary school but now I wear contacts. My favorite number is number 8 because it’s Alex Ovechkin’s number, and it is a doubly even number. My favorite math joke is “19 and 20 got into an argument …. 21!”

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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