Pick a patch to explore
What wonders will you find today?
Three places to play, notice, and learn—at your own pace.
Math play · Open now
Irene’s Number Nibbles
Feed a many-eyed friend two numbers and see what she makes.
Play with Irene →
Space exploration · Live
Galaxy View
Drift through the solar system and discover our cosmic neighborhood.
Launch Galaxy View →
Earth exploration · Live
World Map
Roam the globe, trace new paths, and make the world feel closer.
Explore the world →
All adventures
A no-rush arithmetic performance
Irene’s Number Nibbles
Build the number story in order. Irene waits until the whole expression is ready, then shows what it means.
Irene is ready. Tap a number, or drag it to the table. Nothing is eaten until the whole number story is ready: number, operation, number.
first number?
operation?
second number?
instruction waits here
Working quantity
The working tray is ready.
Answer plate
?
Your number story
Choose an operation
Irene made
Choose what comes next
1 · First numberChoose the first number.
Keyboard: type a number, then + - * or / (x also works for times), then another number. Space pauses or plays. U undoes. Escape resets.