This is a small little activity, easy to do and it gives a beautiful effect!
– Milk, and I think it makes a difference to what kind of milk you use. We used half fat cowmilk.
– Food colouring
– Washing up liquid
– A deep plate, preferably a white one.
Put a layer of milk in the plate, put some drops of food colouring in the milk. The effect might be different when the drops touch each other, you can do it more than once and experiment with it. ( or even better, let your kid experiment with it!)