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Rainbow Spinner

Build it⏱ 5 minutesAges 5-10

When it spins fast, your eyes can't keep up, so the colors mix and can even look white.

See the steps ↓

Grab this

  • A cardboard circle (trace a cup)
  • Markers
  • A pencil
Supplies for Rainbow Spinner

Do it in 3 steps

Rainbow Spinner step 1
1

Color the circle in rainbow slices like a pizza.

2

Poke a pencil through the middle (a grown up helps).

Rainbow Spinner step 3
3

Spin it on the pencil tip. Watch the colors blend!

Tinker Ted with a stopwatchDO IT WITH ME

Your turn! Beat the clock.

Press start, then put the screen down and build. We'll cheer when time is up.

5:00

⭐ Bonus round

Try only blue and yellow slices. What color do you see?

🧠 Why it works

When it spins fast, your eyes can't keep up, so the colors mix and can even look white.

A grown up should be nearby for every challenge. Clean up together when you are done.

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