Xavier SmithWONDER LAB Pick a mission
WELCOME TO XAVIER'S WORLD

Curiosity looks good on you.

A place to make numbers click, chase the mysteries of space, and build whatever you can imagine.

Let's explore Jump into math
Learn by trying. Wonder out loud. Build your own way.
YOUR NEXT ADVENTURE

Choose your kind of wonder.

Three ways in. No wrong place to start.

01 / THE THINKING ZONE

Make math
make sense.

Play with division, fractions, factorials, and patterns.

Enter the Math Lab 02 / THE DISCOVERY ZONE

Go way
out there.

Meet black holes and explore the edge of the unknown.

Launch into Space 03 / THE MAKING ZONE

Dream it.
Build it.

Snap colorful digital bricks together, one idea at a time.

Open Brick Studio
MATH LAB / LEARN BY DOING

A little practice.
Big discoveries.

See a small example, try a question, then explain how you know. Use a hint whenever you need one.

DIVISION MISSIONQUESTION 1
1 / SEE IT

Let's learn together

    2 / TRY IT

    Let's share equally.

    Loading your mission…

    PICK AN ANSWER

    Wonder note: factorials are written with an exclamation mark. For example, 4! = 4 × 3 × 2 × 1.

    SPACE ZONE / ASK BIG QUESTIONS

    What's up with
    black holes?

    They are mysterious, real, and pretty amazing. Take a little space trip to learn what scientists know.

    THE EXPLORER

    Out in the universe

    A black hole has enormous gravity. Like other objects with mass, it pulls on nearby things.

    FAR AWAYEVENT HORIZON

    Scientists find black holes by studying how they affect nearby stars, gas, and light.

    01

    Invisible center

    We cannot see a black hole itself, because light cannot escape from inside its event horizon.

    02

    The point of no return

    The event horizon is the boundary beyond which light cannot get back out.

    03

    Stretchy space

    Near some black holes, gravity can pull more strongly on one end of an object than the other.

    SPACE CHECK / THINK LIKE A SCIENTIST

    What did you discover?

    Pick an answer. If it is tricky, use the clue and try again.

    Keep exploring with NASA Space Place and NASA Science .
    BRICK STUDIO / CREATE ANYTHING

    Every big idea
    starts with one brick.

    Choose a color and size, then tap the board to place a brick. Make a rocket, a castle, a creature, or something only you can imagine.

    1. CHOOSE A COLOR
    2. CHOOSE A BRICK
    3. MAKE IT YOURS

    ONE LAST THING

    Keep asking “what if?”

    That's how discoveries begin.

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