Editorial Standards

Math content only helps if it is right. This page explains how the explanations, guides and practice problems on Math Racer are written, checked and corrected, and what you can expect from us when something turns out to be wrong.

Applies to the Learn articles, the skill guide library and in-game explanations

What we publish

  • Learn articles are long-form explanations of mental techniques and ideas, each with worked examples you can follow by hand.
  • Skill guides accompany individual problem types in our curriculum. Each states the concept, gives numbered steps, and finishes with a worked example and a verification step.
  • Practice problems are checked automatically against a stored answer.

How content is written

  1. Original explanations. We write our own explanations and examples rather than copying text from textbooks, other sites or exam boards.
  2. Worked, not just stated. A technique is shown on at least one concrete example with every intermediate step visible, so readers can check each line.
  3. Plain language first. We introduce the idea in words, then give the notation. Where a convention differs between countries (for example PEMDAS and BODMAS), we say so.
  4. Honest about limits. If a method only works in some cases, or if a result is conventional rather than forced, we say so instead of hiding it.

How content is checked

  • Numerical examples are recalculated independently before publication and, where a quick check exists (reverse operation, estimate or digit-sum test), we use it.
  • Answer checking for each problem type is covered by automated tests, so the same input always yields the same marking.
  • When we change how a topic is explained, we re-read the whole page for consistency, including related articles that link to it.

Corrections

If you find an error, please tell us. We treat a wrong answer or a misleading explanation as a priority. When we confirm a mistake we correct the page, and for significant changes we update the date shown on the page.

Advertising and independence

Math Racer shows Google ads on some written pages to pay for hosting and development. Ads are labelled, they sit apart from the text, and they do not decide what we write: topics are chosen from what players need to practice, not from what advertisers pay for. We do not publish sponsored articles or paid links. Please read our privacy policy for how ad-related data is handled.

Our limits

Math Racer is a practice and learning aid, not a substitute for a teacher, a textbook or a qualified tutor. Our guides focus on mental technique and core procedure, and do not replace the full proofs and context you will meet in a course. If your class uses a different method, follow your teacher's expectations in assessed work.