User research preview

Three complete worlds. The same mathematics.

Each version contains every current page, language, film, interactive proof, practice activity, progress feature, and Ask helper. Open one and use it like the real site.

π?
Format 01

The Impossible Museum

Lessons become exhibits of things that should not be possible.

Enter the museum →
Format 02

Proof Detective Agency

Lessons become cases built from claims, evidence, tests, and verdicts.

Open a case →
Format 03

WonderWorks

Lessons become machines learners operate to reveal the idea.

Enter the workshop →
Testing note: progress is stored by the browser, just like the live site. Because all three formats share the same local origin, progress carries across formats—useful for comparing the same lesson state.