Welcome to Math Doctor
Math Doctor is a growing collection of clear and practical mathematics lessons inspired in part by classic educational texts.
The goal is simple: explain mathematics in a way that is easy to understand.
Complete Courses
- Algebra 1
- More coming soon!
Individual Lessons
- Solving Simple Linear Equations
- Why Negative Numbers Multiply to a Positive
- Adding Fractions
- The Pythagorean Theorem
- Prime Numbers
- Radio Frequency and Wavelength
- Understanding Percentages
- Order of Operations
- Square Numbers
- Classic River Crossing Puzzle
About This Site
This site combines timeless mathematical ideas with modern explanations. Many topics include practice problems and historical notes.