oshc activities
Water Play Day / Sink or Float

Sink or Float

Children predict whether everyday objects will sink or float, test them in tubs of water and sort them by result.

How to run it

  1. Collect a range of objects, such as corks, spoons, leaves and blocks.
  2. Children predict sink or float for each item and record it.
  3. Test each item in a tub of water.
  4. Sort items into sink and float groups and talk about why.

You will need

  • tubs of water
  • assorted objects
  • prediction chart
  • pencils
Make it easier or harderOlder children can try to make a sinking object float, such as moulding foil into a boat.
SafetySupervise water play closely and empty tubs after use.
My Time Our Place · Outcome 4Predicting and testing builds early scientific thinking and vocabulary.

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