Math isn't a list of topics — it's a pyramid. You can't hold algebra up without arithmetic underneath it. This tutor makes that literal: each concept you master lays a brick, each brick unlocks the ones above it, and old bricks get re-checked before they crumble.
How It Teaches
Practice, don't watch
Short problem sets per concept — typed answers and multiple choice. Get stuck? Hints appear after wrong answers, and an AI guide can nudge you without spoiling it.
Never fake mastery
After two misses you can tap "👀 Show me how" for the worked solution — honestly marked as revealed, not counted as correct. No grinding, no shame.
Review before you forget
Spaced repetition brings completed concepts back at ~3, 7, then 30 days. The pyramid stays standing because the foundation gets re-mortared.
The Pyramid
| Tier | Status |
|---|---|
| Counting & number sense | ✅ Fully playable |
| Arithmetic — add, subtract, multiply, divide | ✅ Fully playable |
| Pre-algebra → Algebra → Geometry → Trig → Pre-calc → Calculus | 🧱 Mapped; tiers open as they're authored |
First-time concept completions pay 50 Island Rewards points plus booking credit usable on todoculebra.com — yes, doing math earns you a discount on an e-bike ride.
Start Building
The tutor lives inside Culebra's live island map — do a concept while you wait for the ferry.
🔺 Play the Math Tutor — Free 🗺️ Open the Live Map