Hello, My name is Yao, and I graduated in Tsinghua University with a Doctor degree, Materials Science and Engineering. I used to be a calculus assistant for the professor for college students. I am now a full time Math tutor at home, teaching a variety level of Math, including but not limted to, Beast Academy, Pre-algebra, Algebra, Geometry, Probability, Calculus, AMC8/10/12, ACT/SAT, AP Math, etc. and hope that I can help you with any math problems. I look forward to working with you together. Best Yao