- Number Theory

Mathletes will apply divisibility rules of various integers to simplify computation, better understand number composition and aid in problem solving. In the extension, Mathletes can prove why each of...

- Number Theory

- Plane Geometry
- Proportional Reasoning

Video by Art of Problem Solving's Richard Rusczyk.

- Plane Geometry
- Proportional Reasoning

Video by Art of Problem Solving's Richard Rusczyk.

- Algebraic Expressions and Equations
- Number Theory

Video by Art of Problem Solving's Richard Rusczyk.

- Plane Geometry
- Proportional Reasoning
- Solid Geometry

Video by Art of Problem Solving's Richard Rusczyk.

- Plane Geometry
- Proportional Reasoning

Video by Art of Problem Solving's Richard Rusczyk.

- Number Theory

Video by Art of Problem Solving's Richard Rusczyk.

- Plane Geometry
- Proportional Reasoning

Learn what Mass Points are and how to use them to solve problems involving side lengths and areas of triangles. Mass Points Part 1 (above) covers the fundamentals of Mass Points, while Mass Points...

- Algebraic Expressions and Equations
- Number Theory

Explore Modular Arithmetic by working with remainders to solve problems about very large numbers.

- Number Theory
- Problem Solving (Misc.)

Mathletes are likely most comfortable working with numbers in base 10, but there are many other number systems to explore - other integer bases, fractional bases, and even negative bases. This plan...