About this ActiveBook
What's inside
5 interactive tools
📈
📜
🎧
🎬
❓
Function grapher
Plot any function in 2D — pan, zoom, trace.
Timeline
Zoomable, scrubbable, annotated history.
Audio narration
Listen as you read — chapter by chapter.
Video lessons
Embedded video, transcript-synced.
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
