Rainbow treats. good to take to group activities or school .
Activities for Preschoolers - Threading a rainbow on pipe cleaners.
STEM / STEAM Science for Kids: Exploring Rainbow Reflections with a CD and Paper Snowflakes- fun way to explore light! ~ BuggyandBuddy.com
What an awesome science project for kids! Make a walking water rainbow with just a few simple supplies.
Rainbows w/Fruit Loops .... good for a St Patty's Day/Spring craft
Let's Make a Rainbow Together by Teach Preschool - rainbow art - preschool collaborative art projects
Frozen Rainbow Eruptions – Fun Science for Kids
make these lovely craft stick rainbow puzzles to learn numbers as well as the colors of the rainbow!
How to dye rice - I love how simple this method is! No alcohol or vinegar necessary to achieve these gorgeous, vibrant colors.
Fun science lesson...rainbow carnations! Kids love this simple experiment!