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Free, interactive mathematics — from arithmetic through advanced undergraduate topics.
Axiom Academy is a free mathematics platform: 8,500+ lessons and activities across 47 courses. The catalog starts at arithmetic and pre-algebra, runs through the algebra, geometry, trigonometry and calculus sequences and the standard test-prep tracks, and continues into proof-based and advanced undergraduate subjects — real analysis, abstract algebra, topology, complex analysis, differential geometry, and more.
Every course is built around the same four things: an interactive lesson that introduces the idea, worked examples that show the method a step at a time, practice that tells you where you stand, and animations that make the moving parts visible. The emphasis is on doing the mathematics rather than reading about it — the aim is that a formula arrives as the conclusion of something you have already seen work, not as a thing to memorize.
Lessons are interactive rather than passive. Animations play on demand, worked examples reveal one step at a time, and practice responds as you go.
Every course follows the same arc — build the intuition, state the idea precisely, work through examples, then practice. The structure holds from Pre-Algebra to advanced topics.
All 8,500+ lessons and activities across 47 courses are free with an account, including progress tracking, streaks, and formula sheets.
Answer keys and worked solutions are checked with symbolic math software — the algebra is verified rather than taken on trust — and every course is reviewed before it is released.
When something slips through, it gets fixed fast: reported issues are investigated and corrected, usually within days, and when the same problem appears elsewhere in the catalog, it is corrected there too. What shipped, and when, is listed on the What's New page.
The courses, practice, quizzes and formula sheets on this site are free and stay free. Premium adds companion video lessons on top of them — 433 videos covering Arithmetic, Algebra 1, Geometry, Intro to Proofs, and Calculus 1. The narration is a digitally generated voice at studio quality, which is what makes a video for every lesson in those courses possible instead of only a handful. The remaining courses do not have video lessons (yet).
Premium is free for 14 days, then $10 per month or $100 per year. You can cancel at any time; there is no minimum term and no cancellation fee. See what is included.
Every page has a feedback button in the corner. It sends a bug report or a suggestion along with the page you were on, and you can attach a screenshot. A person reads every report.
A great deal of what has changed on this site began as one of those reports — an answer key that marked a right answer wrong, a figure that rendered badly in dark mode, a lesson that announced itself finished a section early. If something looks wrong, it is worth sending.
For accessibility barriers, educational licensing, billing, account questions, or anything the feedback button does not cover, email support@theaxiomacademy.org. You can also use the contact form.