Halloween STEM Activities to celebrate a 31 day countdown. Includes Halloween Science, Math STEM plus FREE printable activities! Updated for 2018!
Halloween is the perfect time for some fun and engaging STEM activities. There are just so many activities that capture a child’s interest and imagination during this season, and so many of them are perfect for our young scientists! We love Halloween around here and to celebrate I’m planning 31 days of Halloween STEM Activities countdown to Halloween. Join us on our Halloween STEM adventure!
Disclaimer: This post contains affiliate links
I’ve gathered up over 31 science, tech, engineering and math activities that are going to make the countdown to Halloween amazing for your children! Most of these activities are meant for elementary aged children, approximately 8 to 12 years old. Enjoy these spectacularly spooky STEM Halloween projects!
HALLOWEEN STEM ACTIVITIES
HALLOWEEN SCIENCE ACTIVITIES
So many amazing Halloween science projects! Halloween and crazy science are a perfect fit for lots of fun and learning.
Gummy Mummies – Kids love this combination of Lego, History and Science! And who doesn’t enjoy mummies at Halloween?
Grow Your Own Scented Halloween Crystals. These decorations are extremely durable and fun to make. Exactly what we need to decorate for the big day.
Screaming Ghost Balloons – Creepy and fun activity! Explore sounds with this neat project.
Halloween Optical Illusions – Trick or treat? How about some tricks for your eyes with this illusion?
Spider Web Vibrations Science – Spiders are always popular at this time of year, so why not make a giant spider web and learn a bit about how spiders use vibrations?
Get more Halloween STEM Activities with STEAM Kids Halloween and save by bundling with the bestseller STEAM Kids.
Halloween Shooter Toys – A fantastic engineering challenge that is bound to be a huge hit.
Ghostly Engineering Structures – Challenge young architects and engineers to create amazing structures.
Pumpkin Catapult Made From Lego – Construct your very own catapult and pumpkin from Lego and launch them in this fun engineering challenge.
Creepy Crawly Spider Soap Making Project – This might not be a traditional engineering project, but creating these soaps is a must do as part of your Halloween plans!
CANDY & EDIBLE HALLOWEEN SCIENCE
Halloween and candy go together perfectly, so why not use some of that candy to teach a little Halloween Science?
Dive in deep with a unit study into the science of candy making. Kids love Candy Science because success in this lab is sweet!
Explore polymers and eat them too with this glow in the dark jello activity. Perfect for a Halloween party!
Dissolving Candy Pumpkins Science – There is always so much candy around at this time of year, use those sugary treats for learning!
Candy Pumpkin Engineering Challenge – Combine your engineering with some candy for a fun twist.
Halloween STEM Activities Candy Science Kit – Candy is a great addition to some science study with this innovative kit.
Layered Lollipops – A beautiful layered density experiment with candy that smells and looks amazing!
HALLOWEEN TECH ACTIVITIES
Halloween Apps and Tech for a fun, educational, free and spooktacularly techy Halloween. I’m doing this right at the start of our Halloween countdown so they have all month to embrace the spooky tech.
Halloween Brush Bots – Bring a little tech into your Halloween plans with this super cute bot.
Build a Fruit Battery out of Pumpkins! – Learn about battery cells, currents, voltage and more as you build a battery out of pumpkins and squash. Do it right and you can light an LED!
Pumpkin Squishy Circuits – We did these last year and they were such a hit! The play dough does dry out though, so I’m going to do them close to the big day so they will be good to go for Halloween.
Glow Salt Circuits – Perfect for those longer nights these salt circuits are so easy to make but have big wow factor when you turn off the lights!
SPOOKY SLIMES AND OOBLECKS
Glow In The Dark Oobleck – Slime and oobleck are perfect for Halloween and I have lots of it planned over our 31 days. To kick things off we are going to play with some glow in the dark oobleck that glows with or without black light!
Halloween Oobleck Spider Search Game – Take your oobleck to a whole different level with this variation that makes a fantastic Halloween party game.
Glow in the Dark Slime – We LOVED making this slime and it turned out perfect! Excellent for a Halloween party and the paint creates the fluffiest texture in the slime.
HALLOWEEN CHEMISTRY FUN
Glow in the Dark Bath Bomb With Spooky Surprise – Explore some fantastic chemistry (acid-base reactions and how things glow) while making bath bombs kids will have a blast using! Just watch out for the creepy surprise!
Monster Eye Bath Bombs – This Halloween Bath Bomb activity provides a little art with your chemistry as kids use soap to paint their bath bombs for a spooky, shudder worthy, bath bomb activity.
Self Inflating Ghosts – Fun with chemistry!
Halloween Fizzing Pumpkin Treasure (A perfect Halloween twist on Dino Eggs!) – Every time we do the Dino Eggs activity it is a HUGE hit with all ages, so when I saw this idea I knew it was the perfect addition to our Halloween STEM Activities Countdown!
Puking Pumpkins – Volcano Pumpkin Science Experiment – This chemistry experiment is always a HUGE hit with the kids. Carve your pumpkin then use a little chemistry to turn it into an erupting volcano pumpkin. As my son proudly declared: It’s a puking pumpkin!
Make A Glow In The Dark Lava Lamp – These are so much fun, my kids love it every time we do this activity.
Halloween Glow Milk Plastic Activity – Make plastic figures at home with a spooky theme that actually glow in the dark! Making plastic from milk (casein) is a fantastic chemistry experiment for kids.
HALLOWEEN INSPIRED MATH STEM ACTIVITIES
Halloween Math Measuring Pumpkin Circumference – We don’t want to forget the M in STEM, so here’s an easy introduction to measurements using pumpkins.
Pumpkin Geoboard – Fun play with geoboards and pumpkins
Mummy Math Estimation – Mummy math fun!
FREE HALLOWEEN GAMES PRINTABLES
Join the STEAM Powered Family and get a FREE Halloween themed Maze and Word Search. Designed with a little extra challenge for your older kids.
Looking for more STEAM (Science, Technology, Engineering, Arts and Math) projects and inspiration?
Check out the Amazon bestseller STEAM Kids.
MORE FROM STEAM POWERED FAMILY