Play one quiz. Watch Patch find what's really in the way.

You're a student in a class working on quadratic equations. Answer 8 questions, then follow the trail from your mistakes back to the skill that's causing them, fix it, and prove the fix works.

• Your class is 11 simulated classmates. Their answers run through the same engine, so the teacher view at the end is computed, not drawn.
• Script tags mark what the scripted student picks, so the demo lands the same way every time. Turn them off and answer your own way. The engine reacts honestly either way.
• Nothing leaves this browser. No account, no data stored, no network calls once it's ready.