Are you ready to make something really cool with your kids? Your children will go nuts over this fun, easy-to-make Lego Balloon Car. This balloon car is such a fun physical science experiment to try with preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade students. All you need are a few simple materials to try this fun stem project for kids. Ready for an epic balloon activity for kids?
Lego Balloon Car
My daughter loves making and creating with LEGOs. She is not one that can do it for hours, though. But when she has a purpose, she loves making and creating. One thing that she responds well to, though, is movement. If she can make a LEGO car actually move, without touching it, she would be so happy. I told her I could make that happen. So we made this Air Powered Lego balloon car. This is a fun science project for preschoolers, kindergartners, grade 1, grade 2, grade 3, grade 4, grade 5, and grade 6 students.
Now granted, this isn’t a constant movement, but it will get it started. It does move without being pushed.
To start with you only need a couple simple supplies: any color balloon (without any holes in it) and a handful of Lego bricks to you can make into a car – so you’ll want some sort of wheels.
We made this simple, two wheeled wagon. A car, truck or anything with wheels will work, she wanted to use her princess wheels and those are for the wagon and we only have two. So here we are.
Next, we built up and created a small hole that the end of the balloon could fit through. It does not need to be super tight, so that air can flow through, but it does need to be tight enough to keep the balloon connected to the vehicle.
Balloon Race Car
When the vehicle is built, blow up a balloon, but don’t tie it. I twisted it quite a few times to give us a little head start and time to put the balloon through the hole without letting air out. The more air in the balloon the better. Or rather the farther the car will travel on it’s own.
Once the balloon was twisted and put into the hole on the car, we counted down from 5. When we got to “GOOOOO” I let the balloon go. You could see it twirling, letting the twist out. As soon as the twist was out, the air started flowing out of the balloon and the car moved. It moved fast too.
Balloon Experiments for Kids
It was super simple to repeat the process. We tried it, starting on the top of a hill. This helped give the vehicle extra momentum to be able to go down the hill farther and faster! That was super cool.
The reason this is so fun is of course because there is science behind it. The Law of Inertia is Newton’s first law. It says that an object will stay still, not moving, until an outside force moves it. The same goes for an object in motion. It will stay in motion until something stops it.
Physical Science Experiments
In this case, the object (the LEGO vehicle) is stopped and will remain stopped until the outside force (air in the balloon) moves it.
Looking for more free lego printables for kids of all ages? Try these resources
- ⭐ READER FAVORTE – Lego Letters Alphabet Mats to build and trace letters from A-Z
- Trace Lego Numbers using bricks with these free printable duplo mats
- Free Multiplication Games Printable with Lego
- Build and Write Lego Writing Prompts
- Under the Sea Lego Writing Prompts
- Lego Multiplication Flash cards printable
- Tons of Lego themed printable spelling test for kids
- Learn the books of the Bible with this hands-on Lego Bible activity for kids
- Back to School Lego Challenge Ideas
- Free Printable Halloween Lego Challenge
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- Lego All About Me Worksheets
- Free Lego Printables Activities for Kids Poster
- Use these Free Printable Lego Challenge Cards to learn about famous landmarks from around the world as they use their creativity to recreate these famous buildings from the Taj Mahal to the Eiffel Tower and 24 more.
Lego Activities for Kids
- EASY Lego Balloon Car project for kids
- Journaling with Lego is a fun Lego writing prompts
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- Kids will love making their own maze activity. If you use duplo blocks use a ping pong ball, if you use lego bricks use a marble.
- Hands-on Lego Spelling Game
- 100 Ideas for Learning with Lego Activities
- This simple-to-make Lego Zipline is great for teaching kids a variety of skills and having an EPIC afternoon.
- Lego Water Wheel Project
Science Experiments for Kids
Looking for more outdoor activities for kids and things to do in the summer? Your toddler, preschool, pre k, kindergarten, and elementary age kids will love these fun ideas to keep them busy all summer long:
- Marshmallow Shooters – go over 30 feet!
- 2 ingredient Easy Slime Recipe
- Super Simple Sand Slime
- How to Make a Lava Lamp – it’s super EASY!
- Kids will no nuts over this simple Pop Rock Experiment
- Easy Button Crafts for Kids
- Handprint Strawberry Craft for Summer
- Grow Your Own Crystals
- Water Balloon Experiment – exploring densit with an EPIC summer activity for kids
- Amazing Bubble Painting
- Mind Blowing Color Changing Playdough
Summer Activities for Kids
- Egg Shell DIY Chia Pet Craft – Silly Spring / Summer Activities for Kids
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- EASY Stained Glass Pasta Art for Kids
- Simple Flower Mason Jar Lid Crafts
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- Blow GIANT bubbles with this Homemade Bubble Solution
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- 75+ FUN Scavenger Hunts for Kids
- Find activities by month with our June Crafts for kids or our June Activities for Kids!
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Fun Summer Activities for Kids
- Ice Cream Edible Playdough
- Whip up a batch of Kool Aid Playdough – it smells amazing!
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- How to Make Ice Cream in a Bag
- Ice Cream Playdough Patterns
- Head to the zoo with this FREE Zoo Scavenger Hunt – lots of choices for all ages!
- Make your favorite animal with one of these 100 animal crafts
- Try one of these fun Animal I Spy Printables
- Epic Squirt Gun Painting
- 10+ Pasta Flower Crafts for Kids
- Play with your food using this goldfish counting activity
- After seeing the frogs at the pond, grab this free life cycle of a frog worksheet
- Avoid the summer learning loss by practicing math with these crack the code worksheets
- First Day of Summer Craft
- Create this gorgeous stained glass art for kids
- 107 Epic Summer Activities for Kids
Balloon Craft Ideas
Looking for more fun ways to play with balloons this summer?
- 25+ Water Balloon Games for Kids
- Drop & Paint – Water Balloon Painting Activity
- Roll & Paint – Outrageously FUN Balloon Painting Activity for Kids
- Balloon Paint Art Project for Toddlers and Preschoolers
- Learning the Notes on a Staff with a FUN Music Activity for Kids
- Epic Ideas for Water Balloon Painting
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