There is no better pair than science experiments with LEGOs.
Over the years, we have found countless ways to incorporate LEGOs into our STEM classroom activities, and it puts all those tiny LEGO pieces to good use too!
There are so many great ways you can utilize easy LEGO creations to explore science concepts from learning about surface tension to building a car! These great hands-on activities are the perfect way to get your kids excited about science, and make learning more fun.
These activities are great for kids of all ages, and there are even some your little ones can do too! Here are 20 great LEGO science experiments that your kids will love.
Science Experiments with LEGOs that Every Kid Should Try!
If you love LEGO and science, then you’ll want to try these LEGO science projects!
Supplies for LEGO Science Experiments
First, you’ll want to have LEGO bricks on hand. These are our favorite education sets.
LEGO STEM Kits
Here are some LEGO STEM products you can use in your classroom!
All of these LEGO STEM sets have working, moving parts and are a great way to introduce complete STEM builds and activities to your students.
LEGO Friends Beach Amusement Park
LEGO Ultimate Stunt Riders Challenge
You’ll also want to have science supplies on hand. We always stock these:
The Mason Jar Scientist: 30 Jarring STEAM-Based ProjectsBall Regular Mouth Mason Jars with Lids and Bands, 16-Ounces (4-Pack)
Crisco Pure Vegetable Oil, 32 Ounce
Barbasol Soothing Aloe Thick & Rich Shaving Cream 10 Oz (2 Pack)
Alka-Seltzer PFY BXAS50 80659297 Antacid and Pain Relief Medicine, Two-Pack (Pack of 50)
Kadaon 10X Handheld Magnifier Antique Mahogany Handle Magnifier Reading Magnifying Glass for Reading Book, Inspection, Coins, Insects, Rocks, Map, Crossword Puzzle
BORAX 20 Mule Team Laundry Booster, Powder, 4 Pounds
Fine Ground Celtic Sea Salt – (1) 16 Ounce Resealable Bag of Nutritious, Classic Sea Salt, Great for Cooking, Baking, Pickling, Finishing and More, Pantry-Friendly, Gluten-Free
McCormick Assorted Food Color, 1 Fl Oz (Pack of 1)
Food Coloring – 12 Color Vibrant Cake Food Coloring Set for Baking, Decorating, Fondant and Cooking – Upgraded Liquid Concentrated Icing Food Color Dye for Slime Making, DIY Crafts – .25 fl. oz. Each
30% Pure Vinegar – Home&Garden (1 Gallon)
Arm & Hammer Pure Baking Soda, 5 lb
Argo Corn Starch 16 oz. Box (Pack of 4)
20 Must-Try LEGO Science Experiments for Elementary Kids
Elementary kids will love these LEGO science activities and LEGO science projects! Each project listed below is ideal for the elementary classroom and teaches everything from chemical reactions to biology and buoyancy!
LEGO Earth and Space Activities
Learn How to Make a LEGO Rainbow and have your kids create their own to learn about rainbows!
Explore Lego Shadow Towers and how they’re made using this hands-on science experiment.
Let your kids test what things sink and float in this fun Make LEGO Man Sink and Float science experiment.
Mix science with engineering to make this fun and creative LEGO sundial. Learn How to Make a LEGO Sundial here.
Teach your kids about the phases of the moon and how light shines differently for each phase in the LEGO Moon Phases Science Activity.
Make learning the water cycle simple with this handy 3D Water Cycle Science Project science activity.
Learn about the different layers of soil with this LEGO Soil Layers Activity.
Teach your kids about solar power by making a Solar Powered LEGO Car.
LEGO Chemical Reactions Experiments
Use your LEGOs to make a LEGO Volcano that erupts in this cool science experiment.
Save the LEGO mini figures in this fun part play part LEGO Ice Rescue Science Experiment!
Make your very own cool Lego Gummy Mummies with this fun science experiment.
Explore with ice, salt, and LEGOs in this fun Lego Science: An Ice Excavation Experiment.
LEGO Biology Experiments
Teach your kids about the heart and how it works with this fun hands-on How to Make a LEGO Heart activity.
Make your very own cool Lego Gummy Mummies with this fun science experiment.
Rescue Hans Solo with this fun LEGO Star Wars LEGO Science Idea.
LEGO Physics Activities
Learn about windmills and wind energy using this hands-on Windmill STEM Challenge.
Learn about balance and practice weighing items when you build a Build a Genius Lego Balance scale.
Learn about magnets and metal using this cool Levitating Paper Clip science experiment.
Teach your kids about surface tension using this hands-on Surface Tension: Experiment with Salt.
Create cars that really move with these cool LEGO Balloon Cars.
Teach your kids to build LEGO Egg Car Race cars and experiment to see what designs will go the fastest.
More LEGO Science Ideas
Grab our FREE printable LEGO STEM challenges and get more LEGO science ideas!