**Useful Tools:**

- Graphing Tool
- Prime Factorization Calculator – Calculator Soup
- Large Exponents Calculator
- Modulo Calculator – MiniWebtool
- Modular Arithmetic Solver – Congruence Calculator – Online Tool
- PowerMod Calculator
- Factor Calculator
- Long Division Calculator with Remainders
- Manual Method of Calculating Square Roots
- Geometric Calculators
- Base Converter
- Step-by-Step Calculators
- Paul’s Online Math Tutorials and Notes
- Interactive Mathematics
- Beginning and Intermediate Algebra

**Resources:**

- The Story of Mathematics
- Mathemania
- Mathematics Library
- MATHCOUNTS Practice Plans
- Math Online
- Contests and Resources
- Youth Conway Math Association
- AMC 8/10 Topics
- AIME Materials
- Canadian Open Mathematics Challenge (AIME Level)
- AIME Handouts
- Pre-olympiad handouts
- David Altizio’s Web Page
- Iowa City Math Circle
- Washington Univ Math Circle
- Mathematical Olympiads
- PRIME
- Western Pennsylvania ARML Team
- PHS Math Team
- Competition Math Circle’s Handouts
- Pilinguals’ Handouts and Homework
- Epsilon Summer Series
- Ithaca Math Circle
- NYC Math Team (Math with Ms. Lin)
- Western PA ARML
- SIGMAA on Circles
- Crossroads Math Team
- Think Math
- CEMC Problem Set Generator
- Math Lessons
- Mathcentre
- Math All Star Program
- The Saab MATHCOUNTS Online Testing
- MathBits (Algebra and Geometry)
- Geometry from the Land of the Incas
- Mathemania — Free Math Worksheets.
- Prep for Paper
- Better Explained
- Underground Mathematics
- ZLibrary
- Math Books Free Download
- Justin Stevens
- Mathematical Olympiads
- High School Math and Physics Exercises
- Alex Remorov
- Dennis Chen
- KO Math Site
- BCA Math Team
- Harold Reiter
- Ray Li
- Math Notes (Holden Lee)
- The ACHS Math Team
- SEM AMC Club
- Maths Challenge
- Aathreya Kadambi