To make your own rainbow, all you need is a plastic baggie, a sheet of white paper, some sun, and these step-by-step Raindrop in a Bag instructions from Rainbow Science author Artemis Roehrig. Rainbow Science celebrates everything rainbow, from the science of sunlight to the prism in raindrops to how our eyes see all the colors that make up a rainbow. In this fun Raindrop in a Bag activity, kids are rainbow scientists and learn how to make their own rainbows—no (real) rain required! Photo...