As my son has gotten older, LEGO activities have taken center stage in much of our play and learning time. Of course, all these awesome LEGO activities include science experiments and STEM challenges too! After all, LEGO is all about building, creating, exploring, and expanding the imagination. Our LEGO STEM activities are easy to do at home or even at school because we try to use basic bricks or types of bricks you may already have.


LEGO Activities and Play Ideas STEAM challenges


LEGO is one of the best known toys around, but it’s so much more than a toy if you look closely. LEGO can be used to teach mathematics, science, engineering, and even technology or what’s known as STEM! Learn more about what is stem for kids.

What else can LEGO do? LEGO works on developing fine motor skills. Have you seen how small some of those pieces are?

LEGO also inspires kids’ imagination and creativity. It teaches us how to problem solve, and how to use intricate details to make a design come alive.


If you take peek at some of our LEGO STEM activities below, they might seem like an unconventional way to use LEGO. We spend a great deal of time free building from a large box, but we also have some inventive ways to play with our bricks and figures too.

Think outside the brick and see how else you can use your LEGO pieces. Build a volcano for a science experiment, carve a pumpkin and make a LEGO scene, or design parachutes for Mini-figures and test them out.

LEGO STEM activities can keep everyone busy in so many ways. When you want to take a break from LEGO building, why not try some of our awesome science experiments for something different!

Click below to get your printable brick building challenges.


Click on the links below to check out these cool LEGO STEM project ideas.


Try this fun symmetry challenge! Set up half a baseplate with an abstract image and have your kiddo complete it using the principles of symmetry!

LEGO Hex Bug Maze

Make some simple Hex Bugs Lego habitats with your kids anytime! Can your Hex Bugs navigate through successfully?

LEGO Slime

A fun and easy slime activity that combines homemade slime with mini-figs. Also check out our Glow in The Dark Light Saber Slime.

LEGO Zip Line

Explore slopes, tension, gravity and more with this fun Lego STEM activity. Build your own Lego zip line that your mini-figs are sure to love!

LEGO Zip Line

LEGO Parachute

The mini-figs get to have all the fun! The challenge is to build a parachute from simple supplies that will see them safely land. Can you do it?

Lego Minifigure Parachute Coffee Filter Parachute Activity for Kids

LEGO Balloon Car

Build a balloon powered car that really goes! Race your car and see how far to can travel.

Balloon Car

LEGO American Flag

Basic bricks are awesome and so versatile. This is a great project for a young LEGO builder that ties in math skills as well.

Lego American Flag Activity 4th of July Lego Building Idea

LEGO Heart

Explore math patterns, counting, puzzles, and engineering with a simple heart shape you can create over and over again.

LEGO Hearts STEM Activity Valentine's Day Engineering Project

LEGO Catapult

Build an awesome LEGO catapult using basic bricks for an easy STEM and physics activity. This fun homemade catapult just about everyone will want to make! 

LEGO Catapult

LEGO Coding

Code with Lego? Yes definitely! This easy Lego STEM activity introduces binary code to kids.

LEGO Computer Coding

LEGO Rubber Band Car

Find out how to turn the Batmobile into a LEGO rubber band car with this fun STEM project. Your favorite superhero can also be a great STEM activity!

LEGO Rubber Band Car Superhero STEM Book Inspired Activity

LEGO Leprechaun Trap

Catch a leprechaun for St Patrick’s Day with this fun Lego building activity.

LEGO Volcano

Combine one of our favorite chemical reactions with a Lego volcano. This has to be the most fun ever!


LEGO Tessellation

LEGO can be used in many different ways. Creating a tessellation with LEGO bricks is a fun Lego STEM activity to try.

LEGO Tessellation STEAM Math Tiling Puzzle Activity

LEGO Marble Maze

Build your own LEGO marble maze. Can you make it all the way through the maze from one end to the other?

LEGO Christmas Marble Maze STEAM Christmas Countdown

LEGO Jack O’Lantern

Do you love Halloween? Here are two simple LEGO Halloween Building ideas with basic bricks! Build a LEGO Jack O’Lantern and LEGO candy corn!


LEGO Football

Host your own paper football game this season! A simple and fun homemade game for both kids and adults.

Paper Football Game with LEGO Goal Posts Screen Free Activity

LEGO Skittles Game

Have you ever played skittles? How about a homemade LEGO skittles game? We did and we had a blast playing with it too!

Lego Skittles Game

LEGO Minions

Build your own Minions from basic bricks.


LEGO Star Wars

Building LEGO Star Wars Yoda, R2D2, and a Death Star from basic bricks. Use what you have and your imagination to come up with these fun builds!

LEGO Marble Run

LEGO Star Wars Building Ideas Death Star r2d2 Yoda with basic bricks

Click here to get your printable brick building challenges!


Click on the image below or on the link for more fun engineering projects for kids.


  1. These are so great. I am loving your website. It’s so full of amazing activities for the kids, and new ways to use our ridiculously huge collection of LEGOs!

  2. LEGO is a great example of informal learning, love these! Thanks for the sharing. You should also check out a subscription educational box called CubbyCase! It is developed by a group of students from Harvard. Full of STEM toys and other educational products.

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