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. tricia

    I’ve been planning to use toothpicks and marshmallows to build SOMETHING- and now we have a book to use an amplifying activity…I am in LOVE with the bridge book and concept. We will be doing that activity in the future for sure….

  2. Heather

    I love building activities sparked by books. Building is my favorite kind of creativity, I think because it all goes back to my days of Lego building as a kid! The variation in this post is awesome!

  3. JDaniel4's Mom

    What an amazing camp! I would have loved to have been in your class.

    Thank you for linking to Read.Explore.Learn. I am pinning this post.

    • Malia

      Thanks for pinning, JDaniel4’s Mom!!

  4. Jen Fischer

    I love all of these! So creative and so clever. How fun.

  5. Karla

    Can I just say awesome?! You did most of the work for us. I love connecting books with projects. My son’s two favorite things. My son’s a little old for some of these things, but we can certainly work on them together or have friends over to create together. I would LOVE to see more of the same. Thanks!

    • Malia

      Your note made my day, Karla! Thank you. 🙂

  6. stephanie

    This is incredible! Am pinning and reposting now!

    • Malia

      You’re the best! Thanks Boy Mama Teacher Mama.

  7. Jennifer @ The Preschool Plan

    Found you from “I Can Teach My Child”. I love these ideas and the creativity it sparked. I’m going to pin this to use next summer, when I try to do activities and fun stuff with my own children. Thanks so much!

  8. Margaret@GrowingPlay

    Great ideas. I love when the children create their own challenges. We will have to try your bridge penny challenge.

    • Malia

      Thank you, Margaret! Let me know if you give the bridge challenge a try. 🙂

  9. Charlotte

    I love everything about this post! We have some tin can robots just like that too – we used magnetic letters to give them names too!

  10. Jess

    These are amazing! How you need for each lesson? Do you think an hour is long enough for the read aloud and activity?

    • Malia

      Thanks for your kind note, Jess! Yes, it took us about an hour to complete the read aloud and activity.


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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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