For over three decades, Jen has been a beacon of inspiration and guidance in the realm of middle and high school mathematics. She has experience teaching at  Upper Darby High School and, more recently, the Shipley School. A proud alumna of the University of Delaware, Jen holds a B.A. in Mathematics Education.

Further enhancing her expertise, she pursued and achieved an M.A. in Mathematics from Villanova University. With an unwavering passion for mathematics, Jen thrives on tailoring her teaching methodologies to the unique needs of each student, ensuring their comprehension and success. Her dedication to the craft is evident in every lesson she delivers, making mathematics both accessible and engaging for all her students.

Dr. Popiel received his PhD in physics from Temple University in 1990. After publishing several papers on Quantum Mechanics, he came to a fork in the road: Understand Physics more deeply by moving forward traditionally OR understand it by following the multiple paths that precede it. He chose the latter, and to that end he established a private tutoring business, where he tutored high school, college, and graduate students in math, physics, and engineering. As Einstein said: "You do not really understand something unless you can explain it to your grandmother."

Rhonda taught mathematics at Bryn Mawr College for thirty-one years. She earned her B.S., M.s., and Ph. D. degrees in mathematics from the university of Illinois at Chicago. After her retirement from Bryn Mawr, she worked two and a half years at Khan Academy as a Math Content Specialist, where she contributed to the Common Core and SAT prep projects. She is currently Math Scholar in Residence at the Agnew Irwin School. She enjoys helping students who excel at math, as well as those who may struggle.

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Rhonda is available via Zoom

Patrick Cassidy is a longtime educator at independent and charter schools, working with both middle and upper school students in a variety of mathematics disciplines.  In addition, Patrick has been advisor to extracurricular math clubs and a coach of multiple sports during his career.  As a teacher, advisor, coach and father of teenagers, Patrick strives to educate the whole child, attending to their development as community members as well as intellectual lives.  Patrick looks forward to working with students to help them achieve their academic goals.

Sonia Joseph is a Chemistry and Chemical and Biomolecular Engineering dual major at the university of Pennsylvania, where she is part of the Vagelos Integrated Program of Energy Research (VIPER), a program that each year selects 25 highly qualified students from around the world. In high school she was a national merit finalist, and a Cum laude on the National Latin Exam.   Sonia scored a perfect 800 on the Math SAT, an 800 on the subject test math level II, and an 800 on the Subject Chemistry test.  Additionally, she scored a 5 on Calculus BC AP test and a 5 on the Chemistry AP test.   She graduated High School a year early because by then she completed all math and science courses available. She is an avid environmentalist constantly researching current environmental issues and sharing that information with others.  She particularly enjoys teaching math and science and, because of her family’s business, any tests related to college admissions.  She has been helping students at MJ test prep for the last 3 years.  Outside of academics she enjoys designing and sewing her own clothing, running, and cooking vegan dishes.

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Sonia is available via Zoom