* Rainbow Jello! Mine never look as pretty as these over at Glorious Treats, but the kids always love them anyway! :)
* Rotten Ralph by Jack Gantos
* Rosie's Roses by Pamela Edwards
* Race Car Rainbows: I posted about this fun and simple activity last week where you use toy cars to paint a race car rainbow! See the full post HERE.
* Toilet Paper Roll Rockets: I love this craft over at No Time For Flashcards.
* Sun Catcher Rainbows: Find this cute craft at In Lieu of Preschool.
* Rainbow Writing: This is a great way for preschoolers to practice writing their name. Find details in THIS post.
* Rainbow Science: I just found these super cool rainbow science experiments at Growing a Jeweled Rose! She shows how to do Rainbow Rain, Magic Rainbow Milk, and Magic Appearing Rainbows! SO FUN!Printables:
* Rainbow Activities from Confessions of a Homeschooler: As always, there are so many great free printables here. I love these rainbow puzzles that match capital and lowercase letters. (Don't worry, the typo is fixed in the download. :)