40 STEM Activities for Kids

Activities for ages 4 and up.

STEM activities (Science Technology Engineering and Math) are all the buzz in education. Kids love finding out how things work through fun, hands-on projects and teachers love knowing that they’re preparing students for their techy future.

These 40 kid-approved STEM activities are the perfect complement to the 150+ print-and-play STEM centers that are available on The Plato Pack!

40 Awesome STEM ActivitiesScience Projects

We love science so it’s hard to pick a favorite in this first category of STEM activities.


Make exploding pop rockets.

Pull together an easy water drop race. // What We Do All Day

Create fireworks in a jar. // I Can Teach My Child

Blow up a batch of magic balloons.

Create a water cycle in a bag.

Make ordinary flowers glow in the dark. // Fun at Home with Kids

Whip up some magic dancing raisins. // Coffee Cups and Crayons

And speaking of dancing, make gummy worms boogy.

Test out a simple recipe for Oobleck. // STEM Mom

Turn your name into crystals.

Pour a rainbow in a jar.

Whip up a batch of Magic Aqua Sand. // Paging Fun Mums

Make pipe cleaners mysteriously float.

Use just a couple common household ingredients to pour hot ice.

Build a giant sand volcano. // Growing a Jeweled Rose

Grow plants from seeds.

Make clouds in the kitchen. // Modern Parents Messy Kids

Create some magnetic slime. // Frugal Fun 4 Boys


Using STEM activities to prepare kids for the future requires that they experience technology too.

Computer Newsletter

Teach kids about computer coding.

Study the stars with the Star Walk app.

Build globby structures in World of Goo.

Practice strategy by playing Blokus.

Explore pictures and data from NASA missions.

Design treehouses to ferris wheels with Simple Physics.

Practice math facts with Operation Math – a fast paced drill game.


Engineering projects are also an important piece of STEM activities for kids!


Solve LEGO challenge cards. // The STEM Laboratory

Build famous landmarks.

Make junk boats.

Design straw bridges.

Race K’nex cars.

Create straw roller coasters. // Frugal Fun for Boys

Cut out this free balancing robot. // Buggy and Buddy

Build simple {and FAST!} spinning tops. // I Can Teach My Child

Print free activity cards and throw together a portable LEGO kit. // Fun at Home with Kids

Make a bottle water fountain. // Learn with Play at Home


To help kids build a solid foundation of math skills, STEM activities also incorporate math.


Go on a shape hunt.

Play math fact dominoes.

Play a fun subtraction game. // Buggy and Buddy

Print and play Place Value Concentration.

Practice math facts with a flower game. // Nurturestore

Build shapes out of marshmallows and pretzels.

Play a fun round of Loose Tooth Subtraction. // Heidi Songs


Make a batch of Number Trail Mix.

Find different ways to make the numbers 3-10.

Teach kids doubles {3+3, 4+4, 5+5…} with a helpful flip chart. // Mrs. T’s First Grade Class

Cut apart some hundred chart puzzles.

Practice addition with some free write and wipe cards. // The STEM Laboratory

Play a round of Catapult Addition. // Relentlessly Fun Deceptively Educational

Grab a ball for Add It Up! // Mom to 2 Posh Lil Divas

And finally, work on addition AND shapes at the same time with these playful roll and cover pattern block mats. 

Endless STEM Challenges

Join The Plato Pack and get instant access to more than 150+ print-and-play STEM centers kids will beg to repeat!

Save time, stay inspired and get EVERY student bigger results!


  1. Laura

    It would be nice to have a PDF of all of these activities so that we’re not searching the website, and we can just print it out.

    • Ashley

      Hi Laura,
      Thanks for reaching out. While I understand that a PDF would be convenient, this list is a collection of STEM activities from a variety of authors, so we can’t create a PDF.
      If you’re looking for a PDF style version of STEM activities, you might be interested in our ENDLESS STEM Challenge Bundle.
      Let me know if I can be of any further help.
      Ashley // Happiness Ambassador

  2. Beth

    Hi Malia,
    I recently purchased your endless STEM bundle and was wondering if there is a comprehensive materials list or some sort of materials list for each activity. Or do I need to download each file to see what I need to purchase?
    Thanks so much for sharing your amazing activities!

    • Ashley

      Hi Beth,
      I just emailed you 😊
      Ashley // Happiness Ambassador



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Hi, I’m Malia.

I LOVE helping Pre-K, Kindergarten and First Grade teachers save time, stay inspired and give EVERY student bigger results. I’m so glad you’re here!

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