Halloween STEM Activities for Kids: Plan a Spooky Science Night at Home


Halloween fun doesn’t have to stop at costumes and trick-or-treating! I’m always excited to find activities that give families another reason to spend time together, especially when there’s a little learning mixed in.

These Halloween STEM activities for kids from Thames & Kosmos caught my attention right away. Pumpkin-shaped gummy candies, bubbly experiments, and a glowing plasma ball? There are some fun possibilities here for planning a spooky science afternoon at home!

Whether your family loves making treats in the kitchen or exploring how things work, these ideas can help bring a little curiosity into your Halloween celebrations.


Make Halloween Extra Fun With a Little Science

One of my favorite things about family activities is seeing how a simple idea can turn into a special afternoon together. Add a few Halloween decorations, clear a space at the table, and let the fun begin!

The best part? These Halloween STEM activities for kids give everyone a chance to ask questions and explore. Kids can see how ingredients change while making candy, watch what happens during an experiment, or get curious about a glowing science display.

You don’t need to plan a big party or have every activity on this list. Choose the one that sounds most exciting to your family and make it your own!

Thames & Kosmos pumpkin, bat, and ghost gummy candy kit for Halloween STEM activities for kids.

Make Pumpkin, Bat, and Ghost Gummy Candies

If there’s one Halloween treat that sounds extra fun to make together, it’s gummy candy shaped like pumpkins, bats, and ghosts!

The Thames & Kosmos Gummy Candy Kit – Pumpkins, Bats & Ghosts gives kids a chance to make their own Halloween-shaped gummies while learning a little about the chemistry behind candy-making. I can already picture how cute these little treats could look at a Halloween celebration!

This would be a fun pick for a family afternoon in the kitchen. Set out a few festive decorations, follow the kit’s instructions together, and enjoy watching the candy take shape.

While you’re making the gummies, ask your kids what they notice. What does the mixture look like before it sets? How does it change? Which Halloween shape are they most excited to see?

If you’re looking for Halloween STEM activities for kids that include a sweet treat, this gummy candy kit is such a cute way to bring a little science into the kitchen.


Set Up a Mad Scientist Lab With Ooze Labs

Do your kids love slimy, fizzy, and bubbly experiments? The Ooze Labs Chemistry Station is a fun option to consider when planning Halloween STEM activities for kids at home!

The setup includes lab equipment such as beakers and test tubes, with experiments that introduce kids to chemistry. It sounds like a great choice for curious kids who love seeing what happens when they follow the steps of an experiment.

To give your science station a Halloween feel, decorate the area around your workspace with paper bats or little pumpkins. You could even invite the kids to dress up as scientists for the afternoon!

Before you begin an experiment, ask everyone to make a prediction. Then, once you’re finished, talk about what happened and what surprised you. Those “I didn’t expect that!” moments are part of the fun.

And the excitement doesn’t have to end after Halloween! A chemistry station could be an activity to bring out again whenever your little scientists are ready to explore. If your kids enjoy hands-on activities like these, take a look at the screen-free STEM toys my kids keep reaching for for more fun ways to encourage creativity and learning at home.


Add a Glowing Touch With the Thames & Kosmos Plasma Ball

If you’re looking for something that brings an instant spooky-cool vibe, take a look at the Thames & Kosmos Plasma Ball.

The glowing tendrils inside the sphere look a little like lightning and make for a fascinating display. It’s a fun way to introduce a conversation about electricity and plasma while adding a science-inspired touch to your setup.

I can imagine this being especially interesting for older kids and teens who enjoy discovering how things work. Before choosing it for your family, check the age recommendation and follow the instructions on the product you purchase.


How to Plan a Halloween Science Night at Home

Putting together a Halloween science night can be as simple or as festive as you want it to be. Here are a few ideas to get started:

The goal is to have fun, ask questions, and enjoy a little family time. You can keep it simple and still make some wonderful memories!

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Which Halloween Science Activity Would Your Family Choose?

If your kids love helping in the kitchen, the gummy candy kit could be a sweet choice. For children who get excited about hands-on experiments, the Ooze Labs Chemistry Station brings the mad scientist theme to life.

The plasma ball offers a different kind of experience and may be a fun choice for an older child or teen who is curious about electricity. Check each product’s age guidance and instructions to find the best fit for your family.

I also love that these ideas can spark an interest in science beyond the spooky season. With the holidays around the corner, a science-themed gift could be a fun way to keep that curiosity going, too!


Ready for Some Spooky Science Fun?

I’m always looking for little ways to make the holidays feel special, and the idea of mixing Halloween fun with a little science sounds like such a creative way to spend time together.

Whether you’re making spooky-shaped gummy candies, exploring a chemistry experiment, or learning about a glowing plasma ball, these Halloween STEM activities for kids offer plenty of inspiration for your next family activity at home.

Which one would your family be most excited to try: the gummy candy kit, the Ooze Labs Chemistry Station, or the plasma ball?


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