• Lil Tigers

Grow a Rainbow Art Project

Updated: Nov 16

Science Experiment


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There are many myths about rainbows. Many cultures believed it was the pathway to god. In Japan, they called rainbows " The floating bridge to heaven" in North America "Pathway of Souls".

The most popular myth is from Ireland. Were they believed that at the end of every rainbow is a pot of gold hidden protected by a mischievous mythical creature the gold guard.

While doing this project I used the chance to tell them all about those tails. Those and more can be found here.

It also provides you a good possibility to teach them fun facts about rainbows. How they are formed or things they did not know before. Depending on your kid's age you can easily adjust the amount and difficulty level of knowledge you are providing them.

Another good way of getting them excited about this easy craft idea is to read a book about rainbows. Make a trip to the library or take a look at those cute books:

If you like to do this project with smaller kids I recommend using the time to teach about colors. The rainbow colors are red, orange, yellow, green, blue, indigo, and violet. As you can see in the last book.

In this case, I recommend to prepare the project by yourself and just watch it together.

But let's take a look at what you will need for this fun steam activity:

👉 MATERIALS: - kitchen paper

- markers - 2 Glasses - water

This might be interesting for you too: 
- Eggshell Art 
- DIY Colored Rice Recipe
- Toddler Safe Playdough Recipe

Here is the step by step tutorial for you:


Step 1: Prepare the glasses

  • Fill both classes all the way up with water.

Step 2: Cut your paper towel

  • Adjust the paper towel width to your classes with a scissor.

Step 3: Color the paper

  • Paint the rainbow stripes on both ends of the paper towel the kitchen paper. Make sure both sides are identical. Do not use permanent markers!

Step 4: Place the paper in the water

  • Put one end off the paper towel in one glass and the other end in the other glass. Make sure both ends of the paper are in the water.

Step 5: Grow your rainbow

  • Now it is time to have fun and watch the magic, your rainbow will start to grow.

Did you discover our Facebook group “Free Kids Activities Arts and Crafts” yet? 
Join us here for more fun kid's activities, arts and crafts, DIY projects, science experiments, and educational resources.

Knowledge and fun facts about rainbows:

  • Rainbows appear as multiple colored arcs but in fact, they are full circles.

  • Rainbows are not an object, they can not be approached or touched.

  • Rainbows are formed when the sun shines on raindrops and the light bents.

  • Rainbows are never seen the same by two people.

  • Rainbows also form when sunshine meets mist, fog, spray, and dew.

  • Rainbows have 7 colors.

  • ROY G BIV is a good way of memorizing them. The rainbow colors are red, orange, yellow, green, blue indigo, and violet.

  • Did you know rainbows can be created by the moon? I never saw one, it is possible but absolutely rare. They are called "moonbow".

Those and more facts about rainbows can be found here.

Overall my kids loved this DIY project and were fascinated to see their own rainbow grow. We designated an afternoon of fun, teaching, and spending quality time together.

Prior to the project, we went to the library searching for rainbow related books and I read them while the kids did their project. We talked about how rainbows are formed and all the fun facts about them.

They also loved to hear all the different legends from all over the world.

In the evening they showed daddy proud their activity and told them all about the fact s they learned.

Now each time they see a rainbow they smile and remember our fun rainbow-filled afternoon and like to repeat the project. It was a full success! paper towel

I hope you enjoyed this easy science experiment for kids. Don't forget to leave a comment below and add a picture to let me know how your kids liked it. I love to hear from you!

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