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The Ultimate List of Valentine’s Day STEM Activity Ideas

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Love STEM? Love Valentine’s Day? You’ll love this amazing and exhaustive list of Valentines STEM activities and Valentine’s STEM projects for kids of all ages!

STEM activities make us happy. We love bringing STEM and science to every holiday! This time, it’s Valentine STEM activities.

You’ll find something for kids of all ages here, from preschool to elementary school! If you have even older kids, many of these ideas can be expanded and adapted to work for middle school and even high school as well!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!
valentine stem challenges

Valentine’s STEM Activities for Hands-On Kids

Year-Round STEM Activity Ideas for Kids!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

If you can’t get enough of science and STEM activities, you will definitely want to try these Valentine’s Day STEM activities!

You might just become the new favorite teacher! (yes, even if you’re a homeschool mom).

Valentine’s Day Science Projects

These Valentine’s science projects are perfect for doing in February!

These fun science Valentines are such fun for class valentines, school valentines, or valentines for friends and family! What color will you get?

Magic Color Reveal Science Valentines

These color-reveal Valentines are a fun way to add a science twist to Valentine’s school parties!

Celebrate the scientific side of Valentine's Day with this 3D DIY heart model that kids can build from modeling clay! You'll never look at hearts the same way again!

Try making this 3D Realistic Heart Model and learn about what hearts really look like and how they work.

Love slime? Love Valentine's Day? Love free printable valentines for kids? Then you will love these slime valentines we made for Crafty Morning!

You can take valentine’s day to the next level when you make these Slime Valentines and learn about molecualr bonds!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

The Heart Marker Chromatography experiment is one of our favorite Valentine projects to do with a fun science twist.

Nothing says Valentine's Day like pink and glitter. Mix them both in this fun Valentine's STEM activity making pink glitter slime!

Younger kids will have a blast making this Valentine’s Glitter Slime.

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

If your kids and class love oobleck, then they will love this Valentine’s Conversation Heart Goop version.

Making crystals is a super fun science activity and these Salt Crystal Hearts are so much fun during the Valentine season.

Learn about science this Valentine's Day with this fun Valentine's themed lava lamp science experiment! Kids will have a blast with this!

Make this festive Valentine Lava Lamp and learn about chemical reactions!

Transform classic baking soda science into something fit for Valentine's Day with these super-fun fizzing hearts reactions!

If you don’t want to make a lava lamp, these Fizzing Valentine’s Hearts are just as fun!

Valentine’s Day Technology Projects

Bring technology to the holiday of romance!

Kids will love this fun Valentine's Day STEM activity featuring Squishy Circuits! Learn all about circuits this Valentine's Day!

Make your very own Valentine’s Day Light-Up Heart using Squishy Circuits.

Try this fun technology-themed STEM activity if your kids own a coding caterpillar! This coding caterpillar challenge is filled with Valentine's fun!

If you have a coding robot, this Valentine Caterpillar Coding Challenge is a lot of fun to try!

If you want to help your kids learn to code, this simple Valentine's Day coding bracelets challenge is a fun way to make coding come alive!

You can express your sentiments safely when you put them in code with these Valentine Secret Message Coding Bracelets!

Try this fun Valentine discovery bottle to learn about magnets, technology, and science in this simple preschool STEM activity for Valentine's Day!

Learn about magnetic forces when you make this Magnetic Heart Discovery Bottle.

Valentine’s Day Engineering Projects

Engineering is a lot more fun when it’s love themed! Try these Valentine’s STEM projects today!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

Create your own love bugs and design how they would work in this Design a Love Bug Engineering challenge.

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

Build your own LEGO Valentines– it’s harder than you think!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

These LEGO Hearts are a fun way to bring engineering into the Valentine holiday.

This Valentine's Day, make these bouncy balls using just borax, glue, and corn starch! Kids will be amazed at how easy it is to make a homemade bouncy ball!

Design a Bouncy Ball and give them to friends and classmates this Valentine’s Day!

Don't know what to do with your Valentine's Day conversation hearts? Turn them into an engineering project by building conversation heart structures!

Conversation Heart Structures are a fun way to bring design and engineering into the holiday classroom.

Valentine’s Day Math Projects

Make math fun with these Valentine’s math activities!

Love STEM? Love Valentine's Day? You'll love this amazing and exhaustive list of Valentines STEM activities for kids of all ages!

Learn about factors adn Venn diageams with the Conversation heart Venn Diagram Factors activity.

Valentine's Day is the perfect time to do kitchen science with kids. Whip up these fun heart lollipops for kitchen science fun and learning!

Bring math into the kitchen with these Valentine Candy Recipes: Heart Lollipops.

Math can be fun even on Valentine's Day when you do your math using conversation heart manipulatives! Valentine's Day math is so sweet!

Use conversation hearts as math pieces with these Conversation Heart Math activities!

If you love Valentine's Day and also math, then you'll have a blast with the pattern block hearts challenge! It's the perfect way to make geometry fun.

Younger kids will love using pattern blocks to create hearts in the Valentine Pattern Block Heart challenge.

If you need even more Valentine’s Day activity ideas, try these Valentine’s Day STEAM Activities too!

valentine stem challenge cards

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