- Ice cube trays
- Food dye or watercolour paint or coloured pigments
- Deep baking tray
Discuss ice -What is it? How is it made? What is going to happen to the paper when the ice cube melts?
Discuss colour theory -What will happen when colour x is mixed with colour y?
- Make up Coloured Ice solution by adding desired amount of colour (Note Food dye will stain fingers so this method is better for less mess) and then freeze. Make shallow ice cubes as there will be too much water for the paper. It will only take a few hrs for shallow amounts.
- Place paper in deep wall baking tray and add two cubes (add 2 primary colours so that the child can discover colour mixing).
- Get the child to tilt tray on different angles to move the ice across the paper as it melts.
- Extension: Try using different pigments to create different types of watercolour paint ie crushed chalk, food spices and flavourings such as mustard, saffron, curry etc
Links to Curriculum:
Science -exploring change, liquid to solid, melting
Maths -Measuring volume and ratio