STEM and seasons match perfectly with fun challenges that play with favorite themes! If you want to keep the kids busy and give them something to work on this spring, these printable rainbow STEM challenges are the way to go! Get the kids away from the screens and encourage them to invent, design, and engineer their own worlds. STEM activities are perfect all year round!


What do Rainbow STEM challenges look like?

STEM challenges are usually open-ended suggestions to solve an everyday problem or improve an everyday situation. They are meant to get your kids thinking about and using the design process.

What’s the design process? I’m glad you asked! In many ways, it’s a series of steps an engineer, inventor, or scientist would go through to solve a problem.

Read more about the engineering design process here.


Note: While these cards are rainbow-themed selections, your kiddos can look around their communities, homes, and classrooms to come up with a problem that they would like to find a solution for instead.

Plus, you can have your kiddos do some research by asking questions. Enlist family and friends about a problem they would like to solve! This is a great way to get started with STEM challenges and explore ways to make the world better around you.

Learn more about Real World STEM Projects here.

Examples of the Rainbow STEM Challenges include:

  • Build a Rainbow Bridge
  • Build a Rainbow Tower
  • Build a Rainbow Boat

Watch the Video:

Fun Rainbow STEM Challenges!

Explore the changing seasons with STEM. These FREE rainbow activities are perfect for engaging kids in science, technology, engineering, and math as they complete fun and engaging challenges!

I want these printable Rainbow STEM activities to be a simple way to have fun with your kids. They can be used in the classroom as easily as they can be used at home. Print, cut, and laminate to use over and over again.

Free Printable Rainbow Activities Guide and STEM Cards

Download this free mini Rainbow pack to get started today!

How To Set Up Rainbow STEM Challenges

You can use what you have and let your kids get creative with simple materials.

My pro tip is to grab a large, clean, and clear plastic tote or bin. Whenever you come across a cool item you would normally toss into recycling, toss it in the bin instead. This goes for packaging materials and items you may otherwise throw away.

To add to your holiday or seasonal theme STEM challenges, hit the craft or dollar stores for inexpensive theme items to add to the mix. For rainbows, choose bright colors!

Standard STEM materials to save include:

  • paper towel tubes
  • toilet roll tubes
  • plastic bottles
  • tin cans (clean, smooth edges)
  • old CDs
  • cereal boxes, oatmeal containers
  • bubble wrap
  • packing peanuts

Also, make sure to have:

  • colored craft tape
  • glue and tape
  • scissors
  • markers and pencils
  • paper
  • rulers and measuring tape
  • recycled goods bin
  • non-recycled goods bin
  • pipe cleaners
  • craft sticks (popsicle sticks)
  • play dough
  • toothpicks
  • pompoms

Printable Rainbow Projects Pack

Perfect any day of the year if you love rainbows. This Rainbow Projects Pack can be used all year long; not just for March!

  • 10+ Rainbow theme science activities and STEM projects for kids that are easy to set up and fit into your available time, even if it’s limited!
  • Printable Rainbow theme STEAM activities that are simple but engaging for home or classroom. Perfect for K-2 and beyond but easily adaptable to many skill levels.
  • Dive into simple background science explanations to share with kids while they explore hands-on and playful experiments, projects, and activities such as growing crystals, making oobleck, and more!
  • Engaging Rainbow STEM activities pack with theme activities, journal pages, and design process steps! Learn about the design process and think like an engineer while you design and build rainbows and more!
  • Fun rainbow-themed writing and drawing prompt to get kids thinking
  • Try rainbow-themed brick-building challenges perfect for a brick center, screen-free time, or rainy days!