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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.



 Andrew Quartuccio,  Lead Instructor

I am an undergrad student studying Applied Mathematics with hopes to transfer to a 4 year University next year. I enjoy playing sports and video games, staying outdoors and problem solving of any sort.

Favorite Number: 73! It has a lot of cool coincidences like that it is the 21st prime number and its reverse, 37, is the 12th prime. Its binary form is also a Palindrome, 1001001!

Favorite Math Joke: Why do mathematicians like to hike in the woods? Because of all the natural logs.

In five years, I will be: hopefully in a graduate program researching an applied Math discipline in environmental sciences and still teaching or tutoring of some sort.

I love Mathnasium because: they teach math in a way that doesn’t require certain sets of natuaral talents to do well. The way Mathnasium teaches stresses that anyone can be good with numbers if they treat them as skills and concepts that can be trained.

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!

Kacie Webster, Instructor

I am originally from Orange County, California. I attend San Diego State University and am pursuing a major in Applied Mathematics.

Favorite Number: My favorite number is 20 because that was my jersey number for basketball.

Favorite Math Joke: Why is the obtuse triangle always upset? Because it was never right.

In five years, I will be: I will have graduated from college and moved back to Orange County in search of a job in the mathematical field.

I love Mathnasium because: it teaches math in a fun and interesting way.


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

 Kristi Eugenio, 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.


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.


Kayla Holder, Instructor

I’m a junior at SDSU majoring in physics. I have been passionate about studying physics since my junior year of high school. After I graduate, I plan to earn my PhD in high energy physics. Outside of school, I am involved in gymnastics and cheer. I enjoy being active, so I participate in multiple adventure sports, such as, downhill skiing and riding motorcycles. Being involved in these activities allows me to experience the subject I study in the most thrilling way.

Favorite Number: The square root of negative 1 is my favorite number because I love imagination.

In five years, I will be: In the process of earning my PhD in high energy physics.

I love Mathnasium because: I love having a place to discuss math. Whether we are describing the number line or diving into advanced concepts, we get to completely invest our time here in understanding mathematics. There is no other place to have a fun social environment to familiarize yourself with math.