Materials: balloon (one or more), tempera, dishes, thick paper, scissors.
The procedure is simple: place the colours that you have chosen into the dishes, blow up the balloon (the size of the balloon depends on the child’s age). Dip the balloon into the colour and leave traces on the paper in all of the colours.
If the colours mix, we can talk about what colours we get when we mix two particular colours. In the end, when the colours dry, you can cut out any shape you wish.