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Age range: 5-7 | 7-11
Duration: 0-29 mins
  • Science

Fastest freeze challenge

Learn why salt is used on freezing roads in the winter

When it’s snowy outside you might see lorries spreading salt on the roads and people shovelling salt onto pavements. Do you know why they do it? It’s to melt the ice to make the roads safer for the traffic and less slippery for pedestrians. In this Christmas STEM activity, we find out how and why it works! Kids will get their experiment hats on to learn about saturated solutions, freezing points, ions and more!

Download the STEM activity sheet below for free. If you’re up for an extra activity, try our wordsearch where you look for words used in the experiment.

And please do share your learning highlights and final creations with us on social media @IETeducation #SantaLovesSTEM or send them via email to to be featured in our online gallery.

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