About this ActiveBook
What's inside
4 interactive tools
📈
🧭
🌌
❓
Function grapher
Plot any function in 2D — pan, zoom, trace.
Vector field viewer
Visualize fields and flows on a moving grid.
Physics simulator
Gravity, collisions, oscillators, fields.
Quizzes
Per-chapter checks with feedback.
Why ActiveBooks
- ✓ Everything runs right in your browser — no setup, no install
- ✓ Lifetime updates as the author adds new chapters and tools
- ✓ Your state stays — bookmarks, parameters, notes
