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Check out this collection of Valentine’s STEM activities for kids that will have them learning and laughing, this Valentine’s Day!
Do you include Valentine’s STEM activities in your home? The best part about doing STEM activities is the fact that they can be done with just about anything you can think of – even Valentine’s Day!
I’ve rounded some pretty cool experiments that will keep your kids engaged all while celebrating the “love” season. Use these are part of your homeschool STEM curriculum, or just add them to your regular collection of STEAM activities. Now your kids can learn about more than just Cupid this February!
These Valentine STEM activities are great for 4th grade and 5th grade all the way down to kindergarten. Some of them have such wide appeal you could even use them for middle school and high school!
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What are STEM activities?
But first, let’s talk about STEM activities, especially if you’ve never done them before. For starters, STEM stands for science, technology, engineering, and math.
When you add activities to the acronym you now have projects, assignments, challenges and the like that fall within these categories. Through these kinds of activities kids are able to use a hands-on approach to find out how and why things work. Most activities are easy to prepare for and leave a lasting educational impression on the kids who do them.
Valentine’s Day STEM Activities for Kids
Now let’s look at some Valentine’s Day-inspired STEM activities! Enjoy these activities at your next Valentine's Day party or during your lessons leading up to February 14th.
Edible Stained Glass
First up is this edible stained glass STEAM project.
Your kids can make their own stained glass windows using melted (or homemade) hard candy. Make a fun Valentine’s Day image using pinks, reds, and purples, or by making hearts and flowers.
This project requires intense adult supervision due to the heat involved in the melted hard candies. But it’s a ton of fun and a good way to spend your afternoon.
Fizzy Valentine's Lemonade
Now, I’ve got this Fizzy Valentine’s Lemonade activity for you.
While this activity is not necessarily Valentine’s themed, you can easily make it that way with a few dashes of pink food coloring. All of a sudden you’ll be working with a pink fizzy explosion instead of white/yellow!
In this activity, your kids will experiment with acids and bases. They will make their own little chemical reaction explosions and have a blast doing it. And every item is edible so completely safe for even the littlest of learners.
Toothpick Bridge STEM Challenge For Kids
Valentine's Day is the perfect time to make a Valentine's-themed toothpick structure! You can use gumdrops or marshmallows, including pink and heart-shaped marshmallows. You can make a bridge, a tower, or some other Valentiney design.
The choice is yours and whatever you choose, you're in for a super sweet STEM activity.
Conversation Hearts STEM
This conversation hearts STEM activity is both fun and edible. All you need are the small candy hearts and wooden craft sticks. The goal is to build different structures using just these supplies. You can add a challenge to it and give a certain amount of time to build, or let your kids free-build.
Inviting the kids to talk about what they build and the thoughts that occurred will also make great conversation starters! This activity is perfect for any age.
Fizzy Heart Science
Check out this Fizzy Heart Science Experiment! Add a little chemistry to your homeschool day with this super easy experiment that works every time. Most of the supplies needed are already in your kitchen – baking soda, corn starch, water, food coloring, etc. – so there’s little to no expense.
This experiment will lead to lots of good questions and provide many unique learning points (like what causes the fizz and what happens to the colors?).
Marble Heart Maze
Use this Marble Heart Maze to inspire the inner engineer in your kids with red yarn, a hot glue gun, cardboard and just a few other supplies. The idea of this activity is to create a heart-shaped maze using the yarn, then navigating a marble through it using only the tilting action of the cardboard. It’s quite a fun STEM challenge for kids.
Valentine Tinker Tray
What about a Valentine Tinker Tray?
This activity is for the littles in your family. While they use several things that will need to be purchased, it does offer good inspiration for Valentine-colored objects you could add from around your home. Or, purchase some of the things in makeshift form from your local Dollar Store! Perfect for this STEM project.
Heart Magic Milk
Take a look at this Heart Magic Milk Experiment.
Milk, dish soap, food coloring, and cotton balls come together to create a science experiment that will lead your kids to learning about the combination of the fat in milk and food coloring molecules. They’ll get a kick out of watching the explosion of milk and the magic involved in it changing.
Heart Skittles Experiment
Skittles, water, and time are all that’s needed for this colorful Heart Skittles Experiment. Have your kids create a heart shape with a handful of skittles, add water, and watch as the colors melt off the skittles to create a cool and colorful tie-dyed image. This is the perfect science activity for little ones.
Heart Shaped Crystals
Your kids will have a blast creating these Heart Shaped Crystals. Crystal hearts are an incredibly popular Valentine’s Day STEM activity that kids of all ages love. According to the experiment instructions, you’ll be able to see crystals within 4-5 hours, with it being complete within 24.
Valentine's Density Experiment
This Valentine’s Theme Density Jar Experiment will lead young kids on a journey of experimenting with buoyancy and density using a variety of things you probably already have around the house.
It uses different types of liquids such as water, corn syrup, handsoap, and vegetable oil. Each has its own molecular makeup making it interesting to see what floats or sinks!
Yeast and Hydrogen Peroxide
The combination of yeast and peroxide in this Yeast & Hydrogen Peroxide Experiment creates a reaction that results in foam your kids will enjoy playing with. This fun activity is good for developing your child’s fine motor skills.
It’s also an easy experiment to clean up. Use red and pink food coloring to make it Valentine’s themed. You could even enjoy this activity at a Valentine’s Day party.
What Will You Do For Valentine’s Day?
Adding themed STEM activities like a Valentine’s day science experiment to your homeschool is super easy and super fun. Although these are geared toward Valentine’s Day, consider incorporating other activities or challenges for other concepts, topics and times of year.
They are a great way to add hands-on learning while making memories and keepsakes that can be enjoyed for time to come! Trust me – your kids will love them.
I’d love to hear from you! Do you include STEM projects or activities in your homeschool? What have been your favorites so far? Let me know in the comments below!
In addition to Valentine STEM activities, we also enjoy other Valentine’s Day learning activities in our homeschool, as well as year-round holiday homeschooling content. Go and find something fun to do with your kids!
Scientific Method Worksheets – Free Download

Before you move on, we’ve got some free scientific method worksheets for you to download and enjoy. These printable worksheets are useful for any science experiment, science project, STEM challenge, or STEM projects your students might be engaging in.
Turn every science project and STEAM activity into a thought-provoking STEM challenge. Plus give left brain and right brain kiddos alike a chance to utilize their strengths and improve their weaknesses. Get yours now!
STEM Resources Delivered to Your Inbox Every Month

If you liked this edible STEM activity, you are going to love the STEM Made Easy Digital Subscription. Each month, you’ll receive 5 fully-planned STEM project guides along with worksheets and instructions for how to make them fun and engaging for kids ages 3-19. Check it out now!
More STEM Posts
Like the Valentine’s STEM activities found here? Check out these other STEM activities below:
51+ Homeschool STEAM Activities
STEAM Activities for Elementary Students
15+ STEM Activities for High School
Engaging STEM Activities for Middle School Students
More Holiday STEM Activities
- Easter STEM Activities
- Thanksgiving STEM activities
- 4th of July STEM activities
- Holiday STEM Activities
- Glitter Bomb Card
More Valentine’s STEM Activities and Printables
Perhaps you’re on the lookout for some more fun Valentine’s Day activities for your kids to enjoy? Here are some more from the blog:
Free Mad Libs Valentine Printables
15+ Free Valentine’s Day Printables and Worksheets
Free Valentine’s Day Symmetry Pages
Free Valentine’s Day Scattergories Printable for Holiday Fun
Love Language Printable Coupons
Free Printable Valentine Math Worksheets
And here is another collection of fun Valentine’s Day activities from some of our favorite bloggers. Enjoy!
Do you need help inspiring creativity in your children? In All You Do has some super cute gnome writing prompts that you can share with your kids. They’ll be writing fun stories in no time.
When you think Valentine’s Day, you probably think about chocolate. Chocolate is the most popular treat this time of year and Julie Naturally is teaching us more about this delicious and nutritious treat.
STEM activities are not the only way to encourage learning during the holidays. This Valentine’s Day unit study from The WOLFe pack is filled with fun Valentine’s Day activities.
Or maybe, instead of a unit study, you’d prefer a history of Valentine’s traditions like this one shared by Homeschool on the Range?
A quick music lesson is another fun way tie some learning into the holiday festivities. This 15-minute lesson from Music in Our Homeschool about love songs from musicals is sure to make your child’s day.
DIY felt fortune cookies make a great Valentine’s Day craft and this tutorial from Making Room 4 One More even includes a free Valentine printable. Great for a Valentine’s Day party!
Do you struggle with making language arts lessons fun? Try including this Valentine’s Day language arts collection of resources and printables. There are options for ages 3-19. Go pick one out! Thanks to Whole Child Homeschool.
In our home, it’s not really a holiday unless food is involved. Our Crazy Adventures in Autismland must agree because Penny shares this tutorial for easy sweetheart popcorn, just in time for Valentine’s Day.
Just because you are homeschooling doesn’t mean your kids need to miss out on class parties. Everyday Graces Homeschool teaches us how to have a Valentine’s Day homeschool party.
Homegrown Motherhood must be another fan of holiday treats because she shares this Valentine’s chocolate pudding cream cheese frosting with us. Sounds amazing!
Maybe your kids prefer to spend their holidays reading? If that sounds like your family, Heart and Soul Homeschooling shares these 27 Valentine’s Day books for kids that you are going to love.
And speaking of love, Stand Up, Reach Out shares these Valentine’s Day snacks that teach us about God’s love. Bonus – they’re easy and low prep!
Amy from Orison Orchards must be another lover of books because she shares this story time idea: Somebody Loves You Mr. Hatch that will give your kids all the feels.
If you want a super simple, low-prep snack idea, Thrive at Home has 15 fast and fun Valentine’s Day snacks that your kids are going to eat right up.
Hope you find those useful. Happy Valentine’s Day!
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