About MathSir
Dedicated math educator with a decade of experience helping students reach their full potential.
MathSir（Colin Chan）is a professional mathematics tutor based in Irvine, California, specializing in AP Calculus AB / BC. Over the past 10+ years, MathSir has worked with high school students across multiple curricula — including AP, IB, IGCSE, and HKDSE — with a strong focus on conceptual understanding and exam strategy.
His approach is student‑centered: MathSir identifies each learner's strengths and gaps, then design customized lesson plans that build confidence and deliver measurable results. He also uses graphing calculators, math software, and real‑world applications to make calculus intuitive and engaging.
- AP Calculus AB / BC – limits, derivatives, integrals, series, parametric & polar
- Proven track record – many students earn college credit and boost their GPA
- Flexible formats – one‑on‑one, small groups, and intensive exam prep
- IUSD‑aligned – familiar with University High, Irvine High, Portola High, and local curriculum pacing
