About Us:

Jason Mastorakos is the founder of S.T.E.M. Online. He holds a B.Sc. Double Honours in Mathematics and Physics with a 3.9/4.0 GPA, and he specializes in rigorous coaching for students who want to solve advanced Math and Physics problems with real independence. His work focuses on Calculus, Linear Algebra, Differential Equations, proof-based reasoning, and advanced problem solving.

At S.T.E.M. Online, students work directly with Jason to build clear mathematical thinking, stronger verification habits, and the ability to handle unfamiliar problems with precision and confidence. His teaching is designed for serious learners who want more than memorized steps: they want structure, judgment, and durable understanding beyond AI-generated shortcuts.

Jason is also the author of original mathematical books and learning materials developed to support deep understanding and long-term mastery. You can explore them here: https://www.stem1online.com/category/articlesbooks