Welcome to everything you need to get started with FALL STEM activities! This will be your ultimate resource page to take you from September through to December with hands-on STEM activities. It not only includes cool seasonal fall science ideas but also themes like apples. pumpkins and of course Halloween STEM and Thanksgiving STEM ideas!

Enjoy Fall Themes With STEM

These fall theme STEM projects below are perfect for multiple age groups to enjoy and learn something from as well! Whether you choose to erupt an apple, launch candy corn, play with candy, or turn a pumpkin into a geoboard, there is a fun Fall STEM activity for everyone!

These engaging, hands-on fall science activities and STEM challenges invite your kids to explore, test, think, observe, and discover! Learn more about STEM below and check out our list of helpful STEM resources.

Our Fall projects are easy to set up and budget-friendly, so you actually have time to try a few or all of them! I know life is busy and time is limited, but you can give kids a fun taste of science just the same with fall STEM activities.

Check out your local dollar store and craft store for great items to use for your fall activities. Each season we add a couple of new items! Simply clean off your items, store in zip-top bags, and place in a storage bin for use next year! Also check out our must have printable STEM supplies list!

What Is STEM For Kids?

STEM sounds complicated, but it isn’t! Once you get how science, technology, engineering, and math (STEM) mingle, you can see how it applies to so many of the science and STEM activities you already love.

The best STEM activities encourage your kids to use at least 3 of the 4 pillars of the STEM acronym (science, technology, engineering, and math) to tackle their projects head-on, challenge what they know, and build character. The lessons STEM can teach our kids are priceless!

Have you played around with science with your kiddos? If you haven’t, you are in for a real treat. And if you have, you already know how much fun STEM activities are…

Unlock your kids’ curiosity, and spark their inner inventor! The world of science and STEM is AMAZING with these hands-on science experiments and STEM activities!

You don’t have to be a rocket scientist to share STEM with your kids. We have everything you need: simple-to-follow activities, low-prep ideas, easy-to-digest science information, and inexpensive supplies.

Helpful STEM Resources To Get You Started

Here are a few resources to help you introduce STEM more effectively to your kiddos or students and feel confident when presenting materials. You’ll find helpful free printables throughout.

Get your free printable fall STEM challenges!

Amazing Fall STEM Activities For Kids

Click on the links below to find AMAZING fall STEM challenges and activities perfect for sharing with preschoolers, kindergarten to elementary kids. Our STEM projects always use easy to find materials and are easy to set up!


An apple-cano? Who says you can’t set up a baking soda and vinegar chemical reaction in an apple for an easy fall theme STEM activity!

Apple Volcano

Apple Fractions

Enjoy edible apple fractions! Tasty math activity that explores fractions with young kids. Pair with our free apple fractions printable for awesome fall theme learning.

Apple Fractions

Apple Gravity Experiment

Grab some different sized apples and a ramp, and set up a simple gravity experiment. You can also do this with pumpkins!

Apple Browning Experiment

The classic apple and lemon juice experiment is perfect for setting up a falls science experiment.

Apple 5 Senses Activity

There are so many different types of apples to enjoy! Take the great apple taste test and see which apple is your favorite. So simple to set up and includes a free printable worksheet.

Apple Oobleck

Explore this non-Newtonian fluid with a fun fall theme and ingredient!

Balancing Apples

Explore gravity with real apples and paper apples for this fun apple project.

Balancing Apple

Build Cranberry Structures

Grab some toothpicks and fresh cranberries, and build the tallest structure you can! Engineer different 3D structures too!

Build LEGO Apples

These LEGO apples are quick and easy to build and offer simple lessons in math and engineering. Perfect fall STEM activity, LEGO apples are sure to be a hit with your LEGO loving kids!

Butter In A Jar

This must be one of the simplest science projects, with no waste because it’s completely edible! You might also want some warm fresh bread on hand for taste testing. See how to make bread in a bag.

Bread In A Bag

Cranberry Secret Messages

Show the kids how they can write and send secret messages to one another!  Paint with cranberry juice and the message is revealed.  It’s magic!  No, it’s science!

Crystal Pumpkins

Make crystal pumpkins with a fun twist on a classic borax crystal experiment.

Dancing Popcorn Experiment

Can you make popcorn dance? I bet you can with this magical science activity the kids will love this fall. Another fun variation of this experiment is with soda and cranberries.

Dissolving Candy Corn

Our dissolving candy corn experiment is a neat fall science experiment that is easy to set up with only simple supplies needed!

Do Apples Float?

Do apples sink or float in water? Check out this and other fun apple STEM challenges.

Do Cranberries Sink or Float?

Explore simple science concepts with fresh cranberries. Easy activities for fall and Thanksgiving!

Engineering A Pumpkin Tunnel

Can you build a pumpkin tunnel and make a fly through it?

Fall Leaf Slime

Our Fall slime recipe is perfect science and sensory play when the leaves begin to change color. Fall science is easy to do with young kids and older kids too!

Colorful Fall Leaf Slime

Fall Mosaic Tree

Encourage problem-solving, artistic design, creativity, and engineering with this Fall tree mosaic using basic LEGO bricks. Also check out our printable Fall LEGO STEM Challenges!

Five Little Pumpkins STEM Activity

Pair a favorite book, with a hands-on STEM activity! Can you get 5 little pumpkins to sit on the gate or fence?

Fizzing Cranberry Experiment

This is a super simple and fun way to explore states of matter, chemical reactions, and more for Thanksgiving! This fall experiment uses a few simple ingredients for lots of fizzing action.

Fizzy Apple Art

Baking soda and vinegar science meet art for one of our favorite STEAM activities. Add this to your fall activities and you can’t go wrong!

Fizzy Apple Art

How Does An Apple Grow

This is a great apple lesson plan that includes literacy resources, parts of an apple activity, and helpful videos!

How Does Popcorn Pop

Popping corn is a real treat for the kiddos and it is a great example of physical change. Get set to experiment with our easy microwave popcorn recipe, and find out why popcorn pops.

Popcorn Science

Leaf Veins

Explore the structure of plant leaves and how water travels through leaf veins with the kids this season.  This fun and simple experiment is a great way to see behind the scenes of how plants work!

Leaf Chromatography

Have you ever wondered about how leaves get their color? Set up this easy fall experiment to find the hidden pigments in the leaves in your backyard!

Leaf Chromatography Science Experiment
Leaf Chromatography

Pumpkin STEM Books

Our suggestions for fun pumpkin theme books to read, and hands-on STEM activities you can do with each one!


Chemistry and pumpkins combine for a unique volcano science activity!

Pumpkin Catapult

Design and build a Popsicle stick catapult to explore measurement, science, and engineering with a tray full of goodies.

Pumpkin Clock

Make your own clock using pumpkins to power it.  Really?  Yes, find out how you can make your own powered pumpkin clock.

Pumpkin Clock

Pumpkin Geoboard

Turn a simple fall pumpkin into a fun hands-on math activity for all ages!

Pumpkin Oobleck

A classic 2 ingredient oobleck science experiment inside a pumpkin!

Real Pumpkin Slime {In a Pumpkin}

Make our classic slime right inside a pumpkin for cool chemistry. Pumpkin guts and all!

Real Pumpkin Slime

Red Apple Slime

Learn about non-Newtonian fluids with a fun apple twist on a favorite slime recipe. 

Rotting Pumpkin Jack Experiment

I love the story about pumpkin Jack. If you are going to carve a pumpkin this year then you are already a good part of the way there to setting up your own rotting pumpkin science experiment.

Salt Crystal Fall Leaves

Learn how to grow salt crystals for a science and craft all in one!

Sink or Float Pumpkin Experiment

Explore whether pumpkins sink or float, what are the parts of a pumpkin and more with these simple, fun preschool pumpkin activities.

Stacking Apples STEM Challenge

Great STEM activities with real apples to go along with a favorite Dr. Seuss book.

Weighing and Measuring Pumpkins and Gourds

Terrific, hands-on science, math, and sensory play for kids.

Why Do Apples Turn Brown?

Why do apples turn brown makes for a fun fall science experiment for kids!  Get kids thinking about how to keep apples from turning brown, and learn all about the oxidation of apples.

Why Do Apples Turn Brown?

Enjoy Halloween STEM Activities

Nothing screams Halloween STEM like erupting Jack O’Lanterns, spooky density towers, and ghostly structures! For more spooky Halloween ideas check out our 31 Days of Halloween STEM.

Puking Pumpkin

Bonus Printable Fall Worksheets

Life Cycle Of An Apple

Learn about how apples grow from a seed to become an apple tree with these printable apple life cycle worksheets. Great to pair with a hands-on apple activity!

Life Cycle Of A Pumpkin

Learn about a pumpkin life cycle with these fun life cycle of a pumpkin worksheets! Find out how many stages there are in growing a pumpkin and the parts of a pumpkin.

Why Do Leaves Change Color

Find out what causes leaves to change color in the fall with this fun printable lapbook project. Our printable fall leaves project makes learning easy!

Fall Would You Rather Questions

Have some fun with your kids with these printable would you rather questions for Fall. Great for conversation starters or small group activities.

Fall Coloring Pages (Science Theme)

These fall coloring pages explore the anatomy of fall and make the perfect addition to either your next science or art lesson! Learn about the parts of an apple, pumpkin, and leaf with these free printable fall coloring pages. Great for preschoolers as well as elementary age kiddos.

More Fun Fall Activities For Kids

We have also put together a bunch of great Fall slime ideas, Fall Art and Crafts, spooky Halloween science experiments and Thanksgiving STEM activities!