Editorial standards

FreeMathSchool’s study guides are written for students who want to understand a topic well enough to solve problems on their own.

Who writes them

The guides are written and published by the FreeMathSchool team. We use AI tools to help draft some of them. Nothing goes up without being read in full, and every worked example and practice answer is worked through step by step so each line can be checked.

What every guide includes

• Worked examples that show every step, including the checks.
• The mistakes students most often make on that topic, and how to avoid them.
• Practice problems with answers you can reveal after you try.
• Links to related guides, so you can go back to what a topic builds on.

Accuracy

We check answers by substituting them back into the problem or working them out a second way. The calculators use exact fractions where the answer can be exact, and we test them on thousands of random problems, checking each answer against the original equation. Facts about tests, like the format of the digital SAT, come from the organizations that run them, and we update guides when those change.

Corrections

If you find a mistake, please tell us through the contact page. We fix errors in the guide itself, and the date at the top of the page shows when it was last updated.

Ads and independence

Guides are free to read. Some pages may show ads, which are kept separate from the writing and labeled as ads. Nobody pays to be mentioned in a guide. When a guide recommends a tool, including our own, it’s because it helps with the topic.

AI on FreeMathSchool

For how AI features work inside the FreeMathSchool app, see Responsible AI.