You will need:
- Clear plastic containers
- Food colouring (RED, BLUE, GREEN, YELLOW)
- 4 plastic cups
- Straw or spoon to stir
- A day ahead of the activity or the night before, fill the 4 plastic cups with water and add a few drops of colour separately to each cup. So one red water cup, one blue water cup, one yellow water cup and one green water cup.
- Pour the coloured water into the ice trays so you have an even amount of all 4 colours and then FREEZE.
PLEASE NOTE: If you have only made small coloured ice cubes, you will only need small clear containers or bowls, otherwise the food dye wont make a big impact when dissolving into the water.
- Fill clear plastic containers half full with water.
- Get your children to drop one of each of the coloured ice cubes/blocks into different plastic containers and you can watch it slowly dissolve and change the water that colour. Your child can use a spoon to help swirl it around.
- Once the water has changed, drop a different colour into the water, again watching it dissolve and change the water as the 2 colours mix. FOR EXAMPLE: Add a YELLOW ice block first and then add a BLUE ice block and as your child stirs it around, the water will become GREEN.
Yellow + Red = Orange
Yellow + Blue = Green
Blue + Red = Purple
Red + Green = Brown
Try other mixes and then once you make a new colour, try adding that with other containers to see what colours of the rainbow you can make :-)
Your child may even create their own unique colour while mixing!