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Science experiments and STEM activities for kids!

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in STEM Activities

How to Make a Unicorn Rainbow Scribble Bot

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Do you want to learn how to make a scribble bot? We turned the classic scribble bot into a hilarious unicorn bot by attaching our motor to a plastic unicorn.

This rainbow scribble bot project is so much fun for kids and will spark their creativity so they want to make more robots from toys. This is a creative STEM activity idea that you can use in the classroom or at home. Kids will love transforming their toys into art doodle bots!

Unicorns and rainbows go together like peanut butter and jelly. Now you can add STEM to the mix by making a unicorn scribble bot that draws rainbows!

We had the best time making this unicorn scribble bot! She is a fully motorized bot that draws rainbows. You cannot get much cooler than that.

My kids (and I) were laughing the whole time we were playing with her! Your kids will LOVE this simple robot STEM project.

steam challenge cards

Easy-to-Build Unicorn Scribble Robot

This rainbow scribble bot project is so much fun for kids and will spark their creativity so they want to make more robots from toys. This is a creative STEM activity idea that you can use in the classroom or at home.  Kids will love transforming their toys into art doodle bots!

Within 30 minutes, you can have your very own motorized unicorn that draws rainbows!

Disclaimer: This post contains affiliate links at no cost to you for your convenience. 

What you’ll need to build a bot unicorn:

art bot
  • Large plastic unicorn (we used this one)
  • 3 volt motor
  • AAA battery pack with wires
  • Needlenose pliers
  • Hot glue gun and glue sticks
  • Markers (in rainbow colors)
  • Large play tray
  • White paper
  • Scotch tape or electrical tape
  • Mini clothespin
  • 2 AAA batteries

How to make a robot for a science fair project

art doodle bot

First, you have to make sure your motor is up and running properly. Attach the wires from your battery pack to the motor. We found it didn’t matter which wires touched which side of the motor.

They worked as long as they were both attached (making a closed circuit). Because this motor runs off direct current, you don’t have to worry about getting shocked when setting everything up, making it friendlier for little hands.

Once the motor is running, attach your mini clothespin to the rotating part of the motor (we used hot glue). This will make the motor run off-kilter, making it vibrate (which is what you want in this case).

Unicorns and rainbows go together like peanut butter and jelly. Now you can add STEM to the mix by making a unicorn scribble bot that draws rainbows!

Attach your motor to the back of the unicorn.  We used a combination of tape and hot glue to hold it in place. Make sure there is enough space for the clothespin to spin around without knocking into the unicorn’s head.

Attach the battery pack to the underside of the unicorn with hot glue.

Plug in the batteries and make sure your unicorn can move around without toppling over. If she can’t, move things around until the unicorn will move without falling over.

At this point, our unicorn was spinning in circles, which the kids thought was hilarious.

Next, arrange your markers into a rainbow pattern. We made two stacks of three colors each, staggering them so (most of) the colors all would touch the paper at the same time.

Unicorns and rainbows go together like peanut butter and jelly. Now you can add STEM to the mix by making a unicorn scribble bot that draws rainbows!

Attach the markers to the back of the unicorn’s tail so she can drag them along behind her.

Cover your play tray in white paper. You may want to tape some of the edges together so they don’t trip your unicorn.

Unicorns and rainbows go together like peanut butter and jelly. Now you can add STEM to the mix by making a unicorn scribble bot that draws rainbows!

Place your unicorn scribble bot inside the play tray and place the battery inside the battery pack. Watch as your unicorn draws rainbows all over your paper!

It’s mesmerizing!

Unicorn Bot STEAM Elements

scribble bot design

Science: Kids will have to use the scientific method to refine the design for their scribble bot.

Technology: Kids use motors, batteries, and markers to bring their toys to life.

Engineering: Designing a motorized robot is a tricky challenge for kids! They must work carefully to make all elements of the design work without flaw.

Art: Drawing rainbows is a delightful way to use art in this project.

Math: Calculating the right angle for the markers and the correct power source for the motor is essential to making this project work without burning out the motor.

scribble bot stem activity
steam challenge cards

More Creative STEAM Projects

Learn about chemical reactions in this highly visual STEM activity for kids using vinegar and baking soda to create patriotic paint bombs. Summer science!

Patriotic Paint Bombs

STEM activities and STEAM for kids are great ways to develop skills kids can use throughout life. These STEAM activities are easy to do and prep-free!

STEAM Activities for Kids

You may not love eating Peeps, but they are soon to become one of your most favorite educational tools! Peeps science activities will delight all kids!


Peeps STEAM Activities

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Filed Under: STEM Activities

About Brenda Priddy

Brenda grew up thinking she hated science.

But when her 4-year- old daughter was more interested in reading science facts than fairy tales, Brenda realized she had to learn more about science to keep up with her daughter.

Through simple at-home science experiments, Brenda developed a passion for science and now acts as an advocate for STEM education for kids at her website STEAMsational.com.

« Marshmallow Science Fair Projects for Elementary
Colorful Rainbow Density Jar Science Experiment for Kids »

What is STEAM?

STEAM activities for kids promote the idea that science, technology, engineering, art, and math can all work together to help kids become critical thinkers, problem solvers, and innovators!

Join us on our journey to discover just how much fun science experiments can be.

What we do… 

STEAMsational offers STEM and science lesson plans and teaching resources to provide a firm STEM foundation for children in the classroom or home.

All you need to do is find your supplies, gather your scientists, and let the innovation unfold.

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