15 Rainbow Science Experiments - Fantastic Fun & Learning for Kids

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Colors and rainbows provide so many excellent options for incorporating art and STEAM activities. And you know I love incorporating science experiments into our preschool theme activities. I thought you’d also like these fun rainbow science experiments. Use them as part of your preschool rainbow theme or any time to learn about colors and color mixing.

FIND EVEN MORE RAINBOW THEME IDEAS IN OUR PRINTABLE RAINBOW THEME LESSON PLANS

These Rainbow Bubble Snakes are so easy to make and use materials you probably have lying around the house.

With just a few simple ingredients, you can make your own Rainbow Jar.

Your kids will love exploring the spectrum of light sources with this Homemade Spectroscope.

If you are looking for a fun messy play activity for your kids, consider this Scented Rainbow Science and sensory play activity.

These fizzing rainbows are a great science experiment with bright and beautiful colors.

Grow Your Own Rainbow Crystals with this fun borax crystal growing activity.

Make your own pots of gold with these Rainbow Fizzing Pots.

Learn about how you can mix colors to create a rainbow in this Color Mixing activity.

If you’re looking for something fun and easy, you can’t go wrong with this Easy Make a Rainbow Experiment.

This fun Making Rainbow Reflections will teach your kids all about rainbows.

This fun Rainbow Science Absorption walking water activity is a fun recipe your kids will love.

Teach your kids about the different colors of the rainbow with this Fizzy Rainbow experiment.

Learn what happens when marshmallows dissolve in water using this Marshmallow Rainbow Science Experiment.

Use cars and gravity to create this amazing and beautiful Rainbow Painting Gravity Experiment.

Your kids will love making their own candy heart rainbows in this Candy Heart Rainbow Science Experiment.

Get a full week of playful rainbow theme ideas!

Save time and get right to the playful learning with our printable lesson plan sets. Each set includes over 30 playful learning activities related to the theme, and we’ve provided different versions for home preschool families and classroom teachers so all activities are geared directly toward your needs.