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.

Ei Khin

Lead Instructor

Ei earned her degree in Visual Communication Design from Cal Poly Pomona and is pursuing a graduate degree in Design and Innovation at CSU Northridge. She has been recognized for her creative work, including a Bronze Award in the 2024 UDA International Poster Design Competition. 

Ei brings creativity and care to her instruction, helping young learners discover the fun in math. Outside of work, she enjoys swimming, traveling, and winding down with music and movies. 

John Grafilo

Lead Instructor

John is pursuing a degree in Psychology while working toward a career in real estate. He previously worked with Kaiser Permanente’s Youth Program, where he supported STEM education through workshops and mentoring. 

John values the opportunity to help students stay engaged and feel empowered through math. Outside of work, he enjoys discovering new places, exploring different cultures, and relaxing with music and movies. 

Chang Lu

Lead Instructor

Chang is a UC Berkeley graduate majoring in Compute Science (with a minor in Data Science). He is currently working on developing a mobile fitness application and aspires to be a tech startup founder in the future. Chang enjoys various team sports and work out such as volleyball and basketball, and kickboxing. Chang works very well with older students, particularly those who are above pre-Algebra and beyond.

Justin Jia

Lead Instructor

Justin is a graduate from Northwester University with a degree in Computer Science. He aspires to pursue a career in either software development, data analysis or education in the future. Previously, Justin worked for a research lab that developed was and algorithm used in Minecraft as an education resource to teach students the importance of critical thinking skills. In his spare time, Justin loves to play board games, tennis and watching shows.

Jessica Luu

Lead Instructor

Jessica is a graduate from UC Riverside with a degree in Computer Science. She is currently applying for a graduate degree in Data Science. Jessica is very versatile working with those in kindergarten to those who are doing advanced Math classes in high school. During her free time, she enjoys crocheting, opening blind boxes and collecting figures and plushies of her favorite characters.

Ellie Hang

Instructor

Ellie is a graduate from Cal Poly Pomona with Psychology and currently pursuing a Master's Degree in Consumer Psychology/Marketing at USC. She has recently completed Yale University's online Psychology courses. Outside of classroom, Ellie was the first chair violinist in a youth orchestra and participated in numerous festivals and concerts. In her spare time, Ellie enjoys reading thriller and romance novels, watching Korean shows, and baking. Some interesting things about Ellie, she skipped kindergarten and went straight to elementary school. Ellie enjoys working at Mathnasium because of the fun and intuitive interactions with the children, the playful yet focused environment, and the jokes that the students make! Ellie is passionate about graphic design (taking on creative projects in my free time), reading, and finding new tea shops to try.

Emily Hsiao

Instructor

Emily is currently attending Cal State LA with a major in music performance major and a minor in business finance. Emily aspires to pursue her graduate degree in the future in Business or Arts Management either at USC or NYU. Emily is in the honors college program and was a Herbert Zipper scholar at the Colburn School from 2018-2023 and played in the California All State Honors band. She was recently hired as a music librarian for the Cal State LA wind ensemble and jazz band. During her spare time, Emily loves roller skating, reading, writing music, and playing video games. She is passionate about giving back to her community and regularly volunteer at local nonprofits and arts organizations.

Sierra Magallanes

Instructor

Sierra is a Cal State Long Beach graduate with a major in Biology. She is currently attending a Master of Science program in Criminalistics with the goal of working as a forensic lab technician, particularly in the DNA unit. During her spare time, Sierra likes to read books and watch reality competition shows.

Brandon Tang

Instructor

Brandon is a Cal Poly Pomona graduate with a degree in Computer Science with a focus in data science and data analytics. After graduation, Brandon aspires to build a career in data analysis or data science, applying his skills to drive innovation within the STEM industry. Previously, he worked on a consulting project for an energy company. In his senior year, he developed and parallelized a deep learning model for anomaly detection for his graduating project. Outside of academics and Brandon enjoys exploring cafés and trying different types of coffee and matcha, hiking and spending time outdoors.

Cindy Xie

Instructor

Cindy is currently attending PCC and pursuing a degree in Engineering. Previously, Cindy was involved in the HelioTech at Temple City HS and went to the competition in the annual Solar Car Challenge in Texas. In her spare time, Cindy loves to write analysis essays.

Aiden Woo

Instructor

Aiden is currently pursuing a career in healthcare and aspires to be a physician in the future. He is currently working on transferring to UCLA. In the past, Aiden coached multiple 6-8 year old boys soccer teams in the local sponsored team and also trained multiple new Health Scholars in the COPE Health Scholar Program at Adventist Health Glendale. During his spare time, Aiden enjoys spending time with his friends and currently trying to find the time to pick back up learning his Mandarin.

Elizabeth Chan

Instructor

Elizabeth is a rising senior high school student and currently taking dual enrollment courses at East Los Angeles College. She is interested in studying political science, with a focus on international relations. Elizabeth has taken college-level math and has been recognized on the President's Honors List at ELAC. In addition, she completed the Certificate of Merit Level 10 for piano and received State Honors. In her free time, Elizabeth likes jogging, sewing, and playing volleyball. She enjoys learning Chinese and hopes to study more languages in the future.

Joseph Ho

Instructor

Joseph is currently attending Pasadena City College pursuing either applied mathematics or mechanical engineering. Joseph is very interested in problem solving, design, and understanding how things work. In his spare time, Joseph enjoys playing ping-pong and badminton, which keep him active and also sharpen his focus and reflexes. Beyond sports, he also likes reading comics and novels in Chinese.

Irene Lin

Instructor

Irene is currently attending Arcadia High School, working hard to excel both academically and within her school community. After high school, she hopes to pursue a career that combines her interest in finance and psychology. At school, Irene is enrolled in multiple Advance Placement & Honors courses and won has 2 SuperIntendents Art Awards. Irene is a Varsity Cross Country runner, the Vice President of the Financial Literacy Club and the Vice President of Arcadia IgniteHer, which helped raise 100+ donations for organizations in need. In her free time she loves to build jigsaw puzzles, exploring new local cafes while updating her favorites, and going on random side quests with her mom!

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.

Quote Quote
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

Schedule Your Math Skills Assessment Today

Student using math cubes to solve fractions
Student working with a math tutor at a local math learning center

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Are you interested in changing lives through math? We're looking for outstanding individuals with a high level of commitment who are passionate about teaching math. Find out if there's a Mathnasium position that's just right for you!

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