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    Home » Holiday Science » Halloween STEM Challenges

    Halloween STEM Challenges

    October 19, 2020 By Emma Vanstone Leave a Comment

    As next week is Halloween and half term I thought it’d be fun to put together a collection of SPOOKY Halloween STEM challenges for kids. Try making play dough brains, candy grabbers, mini light-up Halloween houses or one of the super simple spooky STEM ideas in the free printable below.

    Halloween sTEM Challenges

    If you’re planning a party I’ve got some great Halloween party ideas for kids as well.

    If you’re looking for gross science ideas, my new book might be just the thing. Gross Science contains 60 icky, sticky and gruesome science experiments for kids and is available to order now!

    Gross Science book for kids, image shows the book cover, blood cell cupcakes, fake poo and more disgusting science

    Halloween STEM Challenges for Kids

    Halloween Candy Grabber

    This craft stick candy grabber is a great science activity for Halloween and may come in and may when trick or treating too!

    Make a brain

    Can you make a brain using play dough? This is a great little challenge for learning about the lobes of the brain and their different functions.

    Model Brain made with play dough, using a different colour dough for each hemisphere.

    Or Left Bran, Craft Brain has some pretend brilliant brain surgery ideas to try.

    Trick or Treat – Halloween STEM Activities

    How tall can you build a creepy structure using Halloween candy? Lemon Lime Adventures used toothpicks and little candy pumpkins, but you could use straws and marshmallows, or even plasticine.

    Can you make it strong enough to balance a pumpkin on top?

    Halloween STEM Challenge - candy structures

    If you’ve got leftover candy you could try some fun Halloween style candy chromatography.

    Blow up a pumpkin without touching it

    Can you work out how to blow up a pumpkin balloon without touching it? You could try using alka seltzer and water, popping candy and water or baking soda and vinegar to see which works the best.

    Blow up a balloon with alka seltzer. Image shows a small orange balloon partially inflated on top of a small glass jar.

    Light up a Halloween House

    This easy electricity activity would also make a great pumpkin alternative. Imagine a row of these spooky Halloween houses on your windowsill.

    light up a house with a simple circuit

    Drawing Robot

    Another fun electricity activity is to make a spider drawing robot. You’ll need a battery, elastic band, motor and wires for this one.

    Everything you need to make a spider drawing robot for a Halloween STEM challenge

    Witchy Potions

    Can you find out which witchy drink makes the best bubbles? We used green smoothie, purple grape juice and chocolate milk. Next time we’re going to try some fizzy drinks and make cocktails.

    Which drink makes the most bubbles - Halloween STEM Activites for kids.Image of child blowing bubbles into a drink

    Clean it up!

    Can you make a witches potion using glitter and herbs in water and then find a way to make the water clear again? How could you do this?

    Hint – what could you use to filter the water?

    Try a sieve, colander or even kitchen roll.

    witchy-herbs in a wooden container

    Ghost STEM Challenges

    Can you find a way to make a flying ghost?

    Try film canister rocket ghosts like Growing a Jewelled Rose or how about making ghosts jump using static electricity?

    Ghost rocket experiment - flying ghost film canisters

    We love these easy Halloween shooters from Red Ted Art. Can you find the perfect combination of weight of the end part and length of straw to make them travel as far as possible?

    halloween-crafts-for-kids-make-these-super-easy-and-fun-shooter-toy-then-have-a-competition-as-to-who-can-shoot-it-the-furthest-533x800

    Density – Halloween STEM Activity

    Can you make a spooky density jar and find a creepy object to float on each layer?

    Halloween density jar made with treacle, golden syrup and other spooky liquids.

    Make some noise

    How many different eerie noises can you make with this simple spooky noise maker ? Can you think of any other ways to make creepy noises?

    spooky noise maker made with a plastic cup, paper clip and ribbon

    Melting haunted hands

    How fast can you melt a haunted hand? We love these from Happy Hooligans.

    What would you use to speed up the melting process?

    Frozen Halloween hands for a science experiment

    Spooky Shadow Puppets

    Can you make a spooky shadow puppet? Bats, ghosts and pumpkins work really well! Add some cellophane for an extra special effect.

    Bat shadow Puppet made with card and a lolly stick

    FREE Printable Halloween STEM Challenges

    These free printable Halloween STEM Challenges are perfect for a fun STEM afternoon at home or an alternative to a Halloween party.

    Make a parachute for a spider, jumping ghosts, shadow puppets or toppling towers.

    FREE printable Halloween STEM Challenges for kids
    Halloween STEM Challenges
    Halloween STEM Challenges for kids - scare yourself silly with these spooky Halloween STEM Challenges #Halloween #STEM

    Last Updated on October 21, 2022 by Emma Vanstone

    « Creepy density
    Pumpkin Optical Illusion »

    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

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