Earth & Space - Changing materials - Making materials change - G3
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ISE 5-14 Curriculum Support Materials                                                           Overview advice

Group 3 exemplar Earth & Space  - Making Materials Change (Word)

Learning outcomes
  • When a solid is heated it melts to form a liquid

  • When this liquid is cooled it forms a solid again

  • When some solids are heated they are changed completely

1. The children should have plenty of experiences of things melting - particularly chocolate and ice-cream.

Commercial ice packs for use in picnic boxes are a cheap and useful way of cooling things in the classroom. Similarly, to heat things gently, fill a margarine tub or lemonade bottle with warm-hot water, replace the lid and use as a hot-water bottle heat source.

With care, a candle or night-light could be lit but close supervision would be necessary and clear the area of loose paper first.

This could be a good time to mention fire safety and a few minutes could be well spent talking about dealing with burns and what to do if someone is on fire.

Clothing on Fire

Do not let the casualty run out of doors. Lay them down, burning side uppermost, and douse with water or wrap the casualty tightly in a coat or a rug.


Cool the burn with cold water until the pain is relieved - this could take a while - 10 minutes or so. Get medical help if the burn is severe. Remove constricting items from the burn area e.g. clothing, jewellery, watches etc. Cover the burn with light, clean non-fluffy material, a burns sheet or cling-film. Don’t apply lotions or creams or burst any blisters. If the burn is large, lay the casualty down with legs raised and supported if possible. Check and record breathing and pulse every 10 min while waiting for the ambulance.


2. When making shapes with plasticine remember once these shapes are full of water they are very difficult to carry so place them on a tray or similar sort of container before filling. Ask the children to look carefully at their ice shapes. Are they bigger than when they went into the freezer? Is the ice perfectly clear? how does it feel when you touch it? Dry or wet?