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Science · The activity desk

Oil and water window

Observe two liquids form layers.

Let's play →

A little plan for play

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What you need

A clear, unbreakable cup, water, and a small amount of cooking oil.

Age: 3–5 years; choose for the individual child.

Let's make it happen

  1. Adult pours a little water into the cup and adds a little oil.
  2. Look through the side and notice where each liquid settles.
  3. Adult gently swirls the cup; watch how the liquids look immediately and after they settle again.

Adult pours and handles the cup throughout; do not drink the mixture. Wipe up spills immediately.

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