Looking for awesome STEM challenges that move? These hands-on activities explore self-propelled vehicles using simple supplies and real-world science. Kids will design, build, and test their own moving machines—from balloon-powered cars to paddle boats and rockets!
Why We Love STEM Projects That Move
When my son was younger, we spent hours tinkering with balloon-powered cars and paddle boats made from rubber bands and cardboard. STEM time quickly turned into playtime—and back again. That’s the magic of building things that move.
This collection of Make It Move STEM challenges is all about designing, testing, and improving vehicles that go, float, glide, zip, and fly—no batteries required. Whether you’re a parent, teacher, or homeschooler, you’ll love how easy these activities are to set up with simple materials.
These projects naturally introduce the engineering design process and give kids a meaningful way to explore physics and problem-solving. Let’s get things rolling!
What Kids Will Learn
These STEM activities explore:
- Forces and motion
- Energy transfer
- Friction and resistance
- Simple machines (wheels, axles, paddles, levers)
- Engineering design and creative thinking
Perfect for ages 5-12, these STEM projects are fun, fast to set up, and packed with learning through play. Use recyclable materials and household items to bring physics and engineering to life.
Try the Engineering Design Process
These projects are a great opportunity to walk kids through the Engineering Design Process:
- Ask – What problem are you solving? What will make the car or boat move?
- Imagine – Brainstorm how different materials can work together.
- Plan – Draw your design and gather materials.
- Create – Build it!
- Test – Try it out. What works well? What could be improved?
- Improve – Make changes and test again.
This process helps kids think like engineers while having fun with hands-on challenges.
🔎 Bonus Tip: Consider organizing a self-propelled car design competition among kids, where they can showcase their creations and test them in races or challenges. This can add an element of excitement and friendly competition to the project.
Self-Propelled Vehicles To Make
Click on the links below to learn more about each STEM car idea, including step-by-step instructions and a full supply list.
Balloon Powered Car
I am sure there are many ways to create a balloon car. One way is to make a balloon car from cardboard.
LEGO Balloon Car
This Lego balloon car is easy to build and fun to play with for all ages!
LEGO Rubber Band Car
How about making it move with a rubber band? Can a rubber band make a car go fast? Find out how fast it can go with this fun rubber band car STEM challenge!
Rubber Band Car
If you don’t have LEGO, we also created a rubber band car with simple household items.
Get your FREE STEM Guide and Journal Pages!
DIY Paddle Boat
Make a paddle boat that moves through the water! This is a fantastic STEM challenge for young kids and older ones, too. Explore forces in motion with this simple DIY paddle boat activity.
Wind Powered Car
You can also harness the power of the wind (or a floor fan) to make something move. How can you design and build a car that will move with the breeze created by a fan?
Don’t have a fan? Make a paper fan or blow through a straw. However, you make “wind” is up to you.
Magnet Powered Car
Can you drive a car with a magnet? Give it a try! We had great fun building these simple LEGO cars that we could drive around with magnets while figuring out how magnets work! All you need is a car design and bar magnets.
More Fun Things That Move
You can think even simpler with easy STEM ideas! Make a boat that floats, a car that moves when pushed, or a plane that flies the farthest. Things that go don’t have to be complicated! Set a challenge for the day and you will have awesome STEM activities to keep your kids busy!
Hovercraft
A hovercraft is also known as an air cushion vehicle or AVC because it can glide over a smooth surface by hovering on an air cushion. Can you make a homemade hovercraft that hovers? Learn about how the hovercraft works and build a mini hovercraft at home or in the classroom from simple supplies.
Rockets
Do you have kids who love things that go pop, fizz, and bang? Take a simple chemical reaction and turn it into something that moves! You could try…
Balloon Rocket
Explore Newton’s Laws of Motion with a simple set-up balloon rocket physics demonstration. Why not set up two and race the balloon rockets?
Zip Line
Set up a fun toy zip line that moves with gravity and create a vehicle for a mini-figure to ride along it in!
Paper Airplanes
Learn how to fold paper airplanes and then build these paper airplane launchers to see how far they fly!
Art Bot
Learn how to make an art bot that scribbles for you. All you need is a few dollar store materials for this simple art bot (robot).
FAQs About Self-Propelled STEM Projects
What age are these STEM vehicle projects for?
Most are ideal for kids ages 5–12 with adult support for younger kids.
Can these be used in a classroom?
Yes! These activities are great for stations, group challenges, or science centers. See our guide on setting up a STEM Lab or tinker station.
Do I need fancy materials?
Nope. These are designed to use typical household or classroom materials. Set up a special bin for recycled materials or interesting items that otherwise go in the trash. For a handy resource, find our must-have STEM supplies list here.
Can we turn this into a competition?
Absolutely! Set up a race, distance challenge, or timed trial to extend learning and engagement.
Helpful STEM Resources
Here are a few resources to help you introduce STEM more effectively to your kiddos or students and feel confident when presenting materials. You’ll find helpful free printables throughout.
Printable STEM Activities Pack for Kids
💡 Find all the directions for the projects in this article and more! 80+ Doable Engineering Projects in one convenient pack!
Awesome post! 🙂 Thanks for sharing some of my ideas!