Halloween Science, STEM, and STEAM

Here’s a list of some of our favorite Halloween science activities. You’ll find ideas for potions, slime, sensory science, STEM challenges, Halloween STEAM, food science, and more. I’ve also included our favorite Halloween math activities at the end.

title photo: Halloween Science, STEM, & STEAM Activities

Halloween Science Activities for Kids

Potions

Fizzy Potions Juice Lab

Make fizzy potions with fruit juice inspired by Room on the Broom by Julia Donaldson. A fun Halloween science activity for kids.

Color Changing Fizzy Potions – Use red cabbage indicator to explore pH.

What’s in the Witch’s Kitchen? Science Exploration and Potions Lab

Science Exploration and Potions Lab to Go Along with What's in the Witch's Kitchen by Nick Sharratt - Part of the Virtual Book Club for Kids

Slime

Super Simple Halloween Slime Recipe

Learn how to make a super simple Halloween Slime recipe. It's easy to make individual batches that are perfect for Halloween parties.

2 Ingredient Glow in the Dark Slime

Learn how to make an easy 2 ingredient glow in the dark slime.

Halloween Sensory Science

Halloween Baking Soda and Vinegar Explorations

Give a classic baking soda and vinegar exploration a Halloween twist with cookie cutters. Such a fun Halloween science idea for toddlers and preschoolers.

Glowing Oobleck – An Easy Slime Recipe

Glowing Oobleck - an easy slime recipe

Pumpkin Oobleck Made with Real Pumpkin

Halloween Science: Pumpkin Oobleck

Halloween Fizzy Play Dough

Make a fizzy play dough that's soft and squishy. Add vinegar to watch it fizz and foam. It's a great sensory science activity for kids.

Frozen Baking Soda Pumpkins

Halloween STEAM

Halloween Robot Spider Craft STEAM Activity

These Halloween Robot Spiders use an electric toothbrush to move. Such an easy and fun Halloween STEM or STEAM activity for kids!

Fizzy Spider Web Art

Combine art with science in this fizzy spider web art activity.

Baking Soda Painted Pumpkins

Baking Soda Painted Pumpkins are a great way to combine science and art!

Spider STEM and STEAM Activities for Kids

cover photo for spider themed STEM & STEAM activities for preschool & elementary

STEAM Kids Halloween ebook (I am an affiliate for this product, which means I make a commission if you purchase through my link.)

Halloween STEAM ebook

Halloween STEM Challenges

Halloween STEM Stacking Challenge with Erasers

Use pumpkin erasers for a fun Halloween themed STEM stacking challenge. It makes for a great busy bag, too.

Explore Static Electricity with Dancing Ghosts and Bats

Halloween Science: Static Electricity Dancing Ghost

Food Science

Candy Science Experiments – use some of that candy for science experiments!

These candy science experiments for kids are perfect for using up that leftover Halloween candy.

What’s in the Witch’s Kitchen? Science Exploration

Science Exploration and Potions Lab to Go Along with What's in the Witch's Kitchen by Nick Sharratt - Part of the Virtual Book Club for Kids

Monster Cupcakes in the Microwave

Monster Cupcakes in the Microwave

Creepy Crawlies & Candy Science

Creepy Crawlies and Candy Science - A Spooky Halloween Science Hangout

More Halloween Science Activities

13 Halloween Science Activities Inspired by a Book

Halloween science activities inspired by children's books

Fluorescent Chlorophyll (pretend vampire blood)

Halloween Science: Fluorescent Chlorophyll

U is for UV Light

U is for UV Light - part of the A to Z Science series for toddlers and preschoolers at Inspiration Laboratories

Halloween Lab Set Up for Trunk or Treat

Halloween Science Lab

Halloween Math Activities

Here you’ll find our collection of Halloween math activities for kids.

Spider Math Games

Play spider math games to work on counting and number recognition plus get kids moving.

Pumpkin Rescue and Counting Game

Halloween Math Game: Pumpkin Add Ten

Download the free printable Halloween math game: Pumpkin Add Ten to practice adding and subtracting ten from any given number.

Halloween Counting Games

Use Halloween themed erasers as math counters for these Halloween Counting Games. They're perfect for preschool and early elementary grades.

Halloween Preschool Learning Games with Cats

Halloween cat matching game for preschool

Bat Number Treasure Hunt

Bat Number Treasure Hunt is a fun way to practice number recognition and counting while getting kids moving.

Check out our collection of Halloween Craft and Activity Ideas here.

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