Ask two or three students to make the background for this artwork. Draw on the cardboard raindrops with white oil pastel. Dilute blue tempera paint with lots of water and paint the cardboard. The oil pastel will resist the paint. Paste the sheets to each other on the short side.
The other children draw one or more falling cats or dogs with umbrella's and colour them with bright colours. Cut all animals and paste them on the cardboard. It's raining cats and dogs!