2 to 3 years Science and Nature 10 min

Watching Ice Melt

One ice cube in the hand, another on a plate: which one will disappear first?

Watching Ice Melt is a Montessori activity for a child aged 2 to 3 years. Area: Science and Nature. Time: 10 min.

See the printable activity sheet

Watching Ice Melt

What the activity builds

Observe that a material can change state, and that the warmth of a hand speeds up the change.

The materials

  • Three or four ice cubes
  • Two small shallow dishes
  • A towel, cold hands get wet
  • Optionally, an ice cube with a small object frozen inside, a piece of fruit for example

How to do it, step by step

  1. Set one ice cube in each dish, one near a cool window, the other near a mild heat source.
  2. Hold a third ice cube in your closed hand, without saying anything, and wait ten seconds.
  3. Open your hand, show the water that's collected there, and invite them to try it too.
  4. Let them hold their own ice cube as long as they can stand it, then dry their hands.
  5. Check back on the two dishes after fifteen minutes, then again later.
  6. In the end, only water is left: show it, without explaining.

The parent's role

Show once, then step back. The word "melt" comes after, not during. What matters is that they come back and look at the same dish several times, that repeated checking is what builds the idea of change. The control of error is the puddle, which is never up for debate.

Safety

An ice cube held too long can hurt and stick to the skin: limit it to a few seconds and dry hands off. Never give an ice cube to suck on, it's a choking hazard. Wet floors get slippery, keep the towel within reach.

You remain the sole judge of what is right for your child. These activities are offered for educational and recreational purposes: they do not replace medical advice or the guidance of an early childhood professional.

Ways to adapt the activity

  • Easier: one ice cube, in one dish, checked on twice.
  • Harder: three different spots, and they point to the one where the ice disappears fastest.
  • Extension: freeze an ice cube with a small toy inside together, and wait until they can set it free.

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