Try it at home

One free experiment for every book – with things you have at home.

Artificial Intelligence for Kids

The sorting machine

You need: 10 small objects, two bowls

How it works

  1. Sort the objects: “soft” in bowl 1, “hard” in bowl 2.
  2. Let someone else sort a new object without telling them anything.
  3. Ask how they knew which bowl.

Why? That’s how a computer learns, too: it sees many examples and spots what belongs together.

⚠ Use only safe objects without sharp edges.

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Gravity for Kids

Do they fall together?

You need: 1 sheet of paper, 1 book

How it works

  1. Drop the sheet and the book at the same time. Which lands first?
  2. Crumple the sheet into a ball and try again.
  3. Lay the sheet flat on top of the book and drop both.

Why? Air slows the flat sheet. Without air, both would fall at the same speed.

⚠ Don’t drop things from high up – stay at child height.

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The Universe for Kids

Your solar system in the hallway

You need: A soccer ball (Sun), a pinhead, a pea, a marble

How it works

  1. Put the ball down as the Sun.
  2. Earth is a pinhead – 23 steps away.
  3. Jupiter is a marble – 120 steps away (hallway or garden!).

Why? Space is mostly empty. The distances are huge compared with the planets.

⚠ Never look directly at the Sun.

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Rockets for Kids

The balloon rocket

You need: Balloon, straw, string, tape

How it works

  1. Thread the string through the straw and stretch it across the room.
  2. Tape the inflated (pinched) balloon to the straw.
  3. Let go – and watch it zoom!

Why? The air rushes backward – the balloon is pushed forward. Just like a rocket.

⚠ A grown-up inflates the balloon. Don’t play with burst balloon pieces – choking hazard.

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Day and Night for Kids

Shadow clock

You need: A stick, chalk, a sunny day

How it works

  1. Stand the stick outside in the ground (or a flowerpot).
  2. Trace its shadow with chalk every hour.
  3. Where does the shadow move? When is it shortest?

Why? The Earth spins – so the Sun seems to move, and the shadow moves with it.

⚠ Never look directly at the Sun.

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Satellites for Kids

The ball on a string

You need: A soft ball in a sock, a string

How it works

  1. Tie the string to the sock with the ball.
  2. Spin it slowly in a circle outside – with plenty of space around.
  3. What happens when you spin faster or slower?

Why? Like the string, gravity pulls the satellite – it flies sideways and keeps falling around the Earth.

⚠ Outdoors only, far from other people and windows.

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Airplanes for Kids

The paper-plane test

You need: 2 sheets of paper, a paper clip

How it works

  1. Fold two identical paper planes.
  2. Clip a paper clip to the nose of one.
  3. Throw both equally hard. Which flies farther?

Why? More weight means the wings must carry more. A plane must be light and well shaped.

⚠ Never throw toward people or animals.

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