- 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.

- Plane Geometry
- Proportional Reasoning

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.

- Plane Geometry
- Proportional Reasoning

Video by Art of Problem Solving's Richard Rusczyk.

- Measurement
- Plane Geometry
- Proportional Reasoning

Understanding and applying ratios can be used in a variety of problems, from finding a missing measurement to determining scale between similar figures. Mathletes will solve problems using ratios...

- Probability, Counting and Combinatorics

This plan builds on what Mathletes already know about ratios to introduce the definition of probability as a ratio of desired outcomes to total outcomes. Mathletes will then practice calculating the...

- Percents and Fractions

Video by Art of Problem Solving's Richard Rusczyk.

- Algebraic Expressions and Equations
- Percents and Fractions

This plan focuses on all things percents. Mathletes will practice with tips, markups, markdowns, interest and percent of quantity scenarios. Use the 'would you rather' questions in the extension to...

- 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...