Built like a game. Backed by mastery science.
Klazoo isn't a worksheet with stickers. It's an adaptive practice loop — designed to keep kids in their zone of just-the-right-difficulty so they make real progress.
Start FreePick a Skill on the Map
Every grade has a visual skill map — concepts grouped into clusters, connected like a quest. Kids see exactly what they've mastered and what's next.
Practice Adapts in Real Time
Every question is generated for your child's level. Get it right? It gets harder. Stuck? It eases off. No two sessions are the same.
Hints When Stuck, Explanations When Wrong
A nudge hint helps without giving away the answer. Wrong answers come with a kid-friendly explanation, not just a red X.
Master a Skill, Earn Stars
Skills unlock 1, 2, then 3 stars as your child shows consistent mastery. The map fills in like a video game completion screen.
Daily Challenge Builds the Habit
Five mixed-skill questions a day. Streaks reward consistency. Most kids practice longer voluntarily — because of the streak, not despite it.
You See What They Actually Know
Mastery scores per skill. Accuracy. Time on task. Real signal — not just "minutes practiced."
Why this actually works
Spaced Repetition
Skills you nearly forgot resurface just before you forget them. The brain remembers harder.
Zone of Proximal Difficulty
Questions land at ~80% accuracy — the sweet spot where learning is fastest and frustration is lowest.
Mastery, Not Time
Klazoo tracks whether your child can do something — not how many minutes they sat in front of a screen.
Variable Rewards
Stars, XP, level-ups, streaks — the same loop that keeps kids on Roblox, used to keep them on long division.
See it for yourself.
Free to sign up. No credit card. 30-day money-back on every plan.
Start Free Today