Can I suggest a couple of tips BEFORE you sit down with the kids to do this:
- cut out a LOT of cardboard ahead of time [they go through it pretty quick] I'm sure paper would work, but it would be messier to get in to the microwave.
- use cotton buds instead of paint-brushes [it makes for quick and easy clean-up].
- I made up 6 batches in 6 individual ramekins, then we added the food colouring in primary and then secondary colours, helps to reinforce this with older kids, and the younger ones love the surprise when red and yellow make orange for example.
In each ramekin put 1 tablespoon of self-raising flour, 1 tablespoon of salt, and 3-4 tablespoons of water. Mix into a nice smooth paste, then add your colour!
When your masterpieces are complete, microwave on high for 20-30 seconds.
Fantastic, cheap holiday fun.