Our Founders

Mason Fang

Instruction Video

Mason Fang is a senior at Dougherty Valley High School and has been doing competitive mathematics since sixth grade. He is a 5-time AIME qualifier and perfected the 2020 AOIME. Mason is also a 4-time USA(J)MO qualifier and attended MOP in 2021. He has also participated in many college-run competitions including the 2019 BMT where he placed 2nd in Geometry and the 2020 SMT where he placed 2nd in Algebra. Outside of math, he is a 3-time USAPhO qualifier and an alternate for the 2021 USA IPhO team. Mason has five years of teaching experience in competitive mathematics and has taught students with skill levels ranging from MOEMS to advanced AIME, and many of his students have achieved success in their target competitions. In addition, he has taught physics classes to help students prepare for the F=ma exam. In his classes, he aims to create a fun learning environment to encourage students to continue studying math and physics.

Jennifer Zhang

Instruction Video

Jennifer is a senior at Dougherty Valley High School. She has qualified for AIME for five years and has been invited to attend Math Prize for Girls at MIT for four years. 

In addition to her extensive competition experience, Jennifer has dedicated much of her high school years sharing her love for math with other students. She is the president of her school’s Math Club as well as the head coach of the Windemere Ranch Middle School MathCounts team; under her training, the team won 3rd, 2nd, and 1st place at the Diablo Chapter in 2018, 2019, and 2020, respectively, for the first time in Windemere’s history. Besides being a paid math tutor, she has worked as a TA at several Alphastar Summer and Winter Camps and has taught at many Cowconuts AMC 8/10/12 camps and courses since 2017. 

Through Cowconuts, Jennifer wishes to create a welcoming community for all math lovers. In particular, she hopes to encourage more girls to explore and thrive in STEM.

Eric Zhang

Instruction Video

Eric Zhang is a senior at Mission San Jose High School. Ever since Eric was a child, he had a passion for problem solving, which has turned into a love for competition math.

Eric is a 3-time AIME qualifier and a 2-time USA(J)MO qualifier (Top 250 in US), with awards in various other local competitions. Outside of math, Eric also avidly explores other stem subjects, such as Physics, (USAPhO Honorable Mention), CS (USACO Silver), Machine Learning, Environmental Science, Statistics and more!

Eric is also an experienced teacher, having taught AMC 8, AMC 10, Abacus, and Chemistry. For the past 4 years, he has taught hundreds of students, including under-resourced high schoolers in LA and local special-needs learners. He hopes to give back to the community by spreading his love of STEM and competition mathematics to students everywhere.

Derek Guo

Instruction Video

Derek is a senior attending Dougherty Valley High School. Ever since he was very young, Derek has enjoyed the art of problem solving from deciphering puzzles to studying for competitions. As a member of Cowconuts, Derek continues to share his knowledge with students and the community through engaging classes and intriguing insights.

From his accolades, Derek is a three-time AIME qualifier and a two-time distinguished honor roll qualifier for both the AMC 10 and 12, and he has also participated in other math competitions, like BMT and SUMaC, with the Cowconuts team and as an individual competitor. Individually, Derek placed 2nd in the MathLeague State competition in the 10th grade division, and 6th overall.

Derek has two years of experience as a tutor and over a year of practice as a paid teacher and TA for Cowconuts and Shengmeng math classes. Outside of Cowconuts, Derek trains the Math Olympiad team at Windemere Ranch Middle School, which includes 4 perfect scorers and an overall team performance of top 2% nationwide.

John Wang

Instruction Video (USACO)

John is a senior at Dougherty Valley High School, and has been learning math and participating in many competitions for over 6 years. Since he was a child, he has always loved doing math and problem solving, and hopes to share his passion with many others. In addition to qualifying for the State MATHCOUNTS competition, he is also a 4-time AIME qualifier, and placed 6th in a regional Mathleague competition. John has a solid teaching experience from teaching Math Olympiad and coaching the GRMS math team for 3 years. Two years ago, the team won 2nd Place in the regional competition and qualified for the State contest. In addition to his competition experience, he has taught multiple classes with the Cowconuts such as the AMC 10/12 winter and spring classes, as well as the AMC8 spring class. In the future, he plans to teach even more classes for Cowconuts students. As a Cowconuts member, he hopes to help more and more students succeed, and more importantly, learn to love math.