We started by reading our Noah's Ark book. There are tons of great versions out there but we have Noah and the Ark: A Bible Spin-Me-Around Book. I like it because it's a little interactive. You can turn the middle part of the page around and Noah and his family are doing different things. It's also a sturdy board book and short and simple enough for my preschoolers to understand and enjoy.
After we read the story, we talked about the meaning of rainbows and then I explained how to put the rainbows together. They are just made of half circles piled on top of each other.
The clouds are half shaving cream and half glue mixed together. I put the mixture in an old squeeze bottle.
Our final products don't look quite like I imagined but I still love them.
Rainbow Activities at Outlaw Mom