A lovely simple little activity which gives you the opportunity to teach children about primary colours, mixing colours, and different temperatures.
First of all we filled our ice cube trays with water and added a couple of drops of red, yellow, and blue food dye. My children love playing with water so this went down really well. We put them in the freezer and left them for around four hours.
Once the ice cubes were ready we talked about how the cold had made the water into solid ice and then popped two different coloured cubes into a glass of water and watched the water change colour. My two year old was really excited seeing the water change and my four year old was hyper guessing what colour the water would turn with different combination of ice cubes.