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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:

Our Team serves the communites of Rancho San Diego, La Mesa, Spring Valley, El Cajon, Jamul, Lemon Grove, Grossmont, Fletcher Hills. and Granite Hills. Our center is located in Rancho San Diego Village (Smart & Final, Dixie Line, and 24 Hour Fitness) on Avocado Blvd. 



Brea Lee, Center Director 

Brea is the Center Director at Mathnasium of Rancho San Diego West. Brea graduated from Southwestern College with her AA in Computer Science and a BS in Web Design and Interactive Media from the Art Institute of California. She began tutoring in middle school by assisting her elementary teachers and it has been one of her passions ever since. She has an interest in all things 'nerdy' from programming and robotics to video games and fantasy novels. She also has a passion for music, and loves to attend concerts in her free time to support the local music scene.

Kristi Eugenio, Lead Instructor

I have my AA in Mathematics from Southwestern College. I am currently pursuing my BS in Accounting. I started tutoring by helping out my high school teachers and found that it is very rewarding. I love the little "AHA!" moments that happen with all of our students and the pride they feel when something finally makes sense.

In my free time, I like to play Magic: the Gathering, Dungeons and Dragons, and many different board games with friends! I also have 4 rats that I like to teach tricks (Sigma, Omega, Iota, and Archimedes).

Favorite Number: 9 because it's the day I was born.

In five years, I will be: Running a Mathnasium of my own.

I love Mathnasium because: It helps reach students who would otherwise struggle. Mathnasium is able to rebuild confidence, show students that they are capable, and help students realize their potential.

CenterDirectorHarrison Bongard, Instructor

I graduated from San Diego State University with a Bachelor's Degree in Business Administration. During college I Tutor ninth through twelfth grade math. I privately tutored and tutored at Cuyamaca College until I moved to Washington DC and worked as a Math and Computer Teacher. I returned to San Diego, where I got married in 2016 and became a Father in 2017.

Favorite Number: 14, it is the day I was born.

Favorite Math Joke: Why is 6 afraid of 7? Answer: Because 7 ate 9.

In five years, I will be: Enjoying life with a Kindergartener and teaching him Math.

I love Mathnasium because: I love being able to see kids' math knowledge grow over time. Mathnasium is Amazing!

 Rachel Owens, Instructor

I am a former math teacher and now currently write math curriculum. I have always loved helping students understand and grow to enjoy doing math. Math is like a puzzle to me which makes it fun to solve. I am mom to three great kids that I devote my time to when I am not engulfed in math!

Favorite Number: 5 because it is such a nice number and easy to multiply and divide with.

Favorite Math Joke: Why is 6 afraid of 7? Because 7 8(ate) 9.

In five years, I will be: Being a mom, writing math curriculum and tutoring kids.

I love Mathnasium because: It is a place where students can come and find out they are actually great at math!

Christian Pratt, Instructor

I attend Miramar and Mesa Community Colleges, majoring in mechanical engineering. In my spare time I like to play and listen to music, read, be active and hang out with family and friends.

Favorite Number: 3, because it was my sports number my whole life.

Favorite Math Joke: What is the difference between a diameter and a radius? A radius.

In five years, I will be: Working at SpaceX or NASA.

I love Mathnasium because: the entire curriculum emphasizes understanding rather than memorization

Aram Sepulvida, Instructor

 Aram is currently studying Mathematics with a Single Subject Teaching emphasis at San Diego State University. In his free time, he likes to spend time with friends, and likes to work on cars.

Favorite Number: 4 - It's just a nice single digit number.

Favorite Math Joke: Why should the number 288 never be mentioned? It's two gross.

In five years, I will be: teaching high school math.

I love Mathnasium because: I enjoy interacting with the students, as well as helping them understand new math concepts.

Darryn Hollifield, Instructor

I love sign language, art, and dogs.

Favorite Number: 42. It's a classic--the answer to Life, the Universe, and Everything. It's a LOST number. And it has a lot of factors, so that's neat too.

Favorite Math Joke: Faced with an empty birdcage, the mathematician cried out: "Polly gone!"

In five years, I will be: teaching math to Deaf students.

I love Mathnasium because: we really help kids understand how and why numbers work together.