Practice hub

Each topic page has Practice (pool from practice/data/bank.json) and Quiz mode (per-unit JSON under quiz/data/). Open the unit you are studying:

Vectors · Quiz
Limits · Quiz
Derivatives · Quiz
Applications · Quiz
Antiderivatives · Quiz
FTC & area · Quiz

Tips

Use Check when offered; open Show solution to compare your work. Correct auto-checks trigger a short celebration (unless your system prefers reduced motion).