About the site
About mathismaths.com
The name says it plainly: maths is maths. It is the same subject whether you are seven or seventy, and it deserves explanations that respect the reader.
- lessons
- 130
- topics
- 8
- dictionary terms
- 194
- calculators
- 6
What we are trying to do
mathismaths.com is a free maths reference for learners, parents and teachers. We want anyone who searches for a maths idea to land on a page that explains it clearly, shows a fully worked example and tells them where the idea is actually used.
How every lesson is built
Each lesson follows the same structure so you always know where to look:
- The idea: what the concept means, in plain English, before any symbols.
- Worked examples: numbered steps, with nothing skipped.
- Key formulas: the handful of results worth remembering, kept in a box beside the lesson.
- Why it matters: real situations where the maths earns its keep.
Our principles
- Original writing. Every explanation, example and definition on this site was written for mathismaths.com.
- No adverts, no sign-up. Nothing gets between you and the explanation.
- Accuracy first. Answers in worked examples are checked, and the calculators print their working so you can verify them.
- Readable on anything. Pages are fast, work without JavaScript (except the calculators) and are built to meet accessibility standards.
Spotted a mistake?
Maths is unforgiving about errors and so are we. If you find one, or have an idea for a topic we should cover, email hello@mathismaths.com. We read everything.