Structure
One lesson leads to the next
Each course is an ordered set of lessons and exercises. Finish one and the next unlocks, so there's always a clear step ahead and nothing missing behind it.
Always free — 3 courses, 7,100 exercises, now in open beta
All knowledge is connected, and Polymathy is built to match. Every course sits on top of the ones it needs, so the route to a far-off subject like Plasma Physics or Differential Geometry traces right back to a course you can start today.
Every course works the same way.
Whether you're starting Pre-Algebra today or working toward Quantum Mechanics later, the model doesn't change.
Each course is an ordered set of lessons and exercises. Finish one and the next unlocks, so there's always a clear step ahead and nothing missing behind it.
Each course has a course book for the theory and lessons full of interactive problems to put it into practice: you drag points on a graph, build expressions, put a proof in order.
The exercises and course books are written, edited, and reviewed by the people learning from them. Find a mistake and you can fix it; strong contributions become part of the course.
Free to use. Start whenever you're ready.