A Pinch of Salt

Today's post is brought to you by one of our advisory teachers, Jane Winter

The weather is getting colder, and our thoughts are turning to icy windscreens and slippery roads! As gritter lorries gear up for action, a useful way to link this seasonal change to the science curriculum is with CIEC’s A Pinch of Salt. This free resource provides a real life context in which children can apply learning objectives and practise vocabulary from the science curriculum. 

It's working! Watching the clear salt solution drip through the filter paper.

In one activity children are first invited to compare a sample of pure salt with some rock salt. They are asked to consider how they could extract salt that was pure enough to use on food from the rock salt that is used for gritting roads. The process starts by dissolving the rock salt sample in water before filtering it to remove all the undissolved solids. The water is then evaporated from the salt solution to leave behind salt. The evaporation can be sped up by leaving the solution on a radiator or by using a tealight. 

The resource contains all of the information that you need to carry out this easily resourced activity.

 If you would like to try this, or any other activity, from A Pinch of Salt you will find that it is fully supported with teachers' notes and activity sheets for children. There is also safety guidance including information about NOT actually using salt purified in this way on food and the safe use of tealights. We would love to hear about your experiences of using this, or any other CIEC resource, and will send a hard copy of our acclaimed 'Working Scientifically' to anyone who shares their experiences with us.