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Valentine’s STEM Activities for 4th Grade

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I love 4th graders. In 4th grade, kids are mostly independent but they don’t have that tween and teen know-it-all spirit that can get a little tiring. Today, I’m celebrating the fourth grade with these Valentine STEM activities for 4th grade!

4th graders aren’t ready for true love, and they are a bit beyond classroom valentines, so there is a bit of a void on what to do with 4th graders on Valentine’s Day!

Of course, our solution is to try Valentine STEM activities.

Need Valentines STEM activities for 4th grade? These Valentines Day STEM activities are jus the solution and fourth graders are sure to love them!

These Valentine’s Day STEM activities were grouped with 4th graders in mind, but of course, third graders and fifth graders will probably also love these Valentine STEAM projects!

Perfect Valentines STEM Activities for 4th Grade

4th grade valentines day stem

If you teach 4th grade, or just have a 4th grader at home, your kids will have a blast with these hands-on Valentine STEM activities.

How to Do the Valentine STEM Activities for 4th Grade

valentine stem challenges

These Valentine STEM projects aren’t meant to take forever or cost an arm and a leg. For the most part, these activities can all be done in one sitting.

But, we do suggest taking a look at the instructions a few days in advance in case you have to pick up a few things for the project.

We usually have a variety of STEM supplies on hand, but we definitely realize that not everyone is as science-crazy as we are!

4th Grade STEM Projects for Valentine’s Day

valentine stem for 4th grade

Let your 4th graders have fun and explore with these Valentine’s Day STEM activities!

This Valentine's Day slime recipe is perfect for kids of all ages! Make this Valentine confetti slime as a non-candy valentine for your kid's class or make it in school as a Valentine STEM activity! #valentinesday #kidsactivities #slime #slimerecipes

Valentine Confetti Slime

Celebrate Valentine’s Day, a love of slime, and science all at the same time! 4th graders will love making this stretchy, glittery version of slime.

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!

Conversation Heart Math

Use conversation hearts as math manipulatives in the week leading up to Valentine’s Day. We wrote on ours with food-safe markers so that the kids could still eat them if they wanted to.

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!

Make a 3D Heart Model

Nothing like an anatomically correct heart to gross out a 4th grader. And they can learn about the chambers of the heart at the same time.

This Valentine's Day, learn all about marker chromatography combined with love when you make these heart-shaped chromatography stripes! Valentine's science!

Valentine Heart Marker Chromatography Science Project

Take out the colors in markers and see how many colors are actually present inside a marker. This is a fascinating experiment that most fourth-graders really love.

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

Valentine Glitter Slime

4th grade kids are not too old for slime. In fact, 4th grade might just be the slime heyday. Follow these directions to make slime-making into a science activity.

This Valentine's Day, make your valentine these adorable salt crystal hearts! How are they made? Find out in this simple science experiment!

Salt Crystal Hearts Science Experiment

If you have a bit more time, making salt crystal hearts is a super fun STEM activity for Valentine’s Day. Kids can determine the best way to form the hearts and allow the crystals to grow, and also learn about the science behind the experiment.

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

Valentine’s Day Lava Lamp Science Experiment

Most 4th graders could do the lava lamp experiment over, and over, and over, and over. There is something restful and appealing about watching colored bubbles rise to the surface of a container!

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

Valentine’s Day Fizzing Heart Reactions

For more chemical reaction fun, let your 4th graders make baking soda hearts and then use vinegar to melt them.

Engineering activities for kids teach a lot of useful skills, like circuits, properties of matter, physics, design, spatial awareness, and more! Kids will have a blast with these engineering activity ideas and engineering for kids has never been so fun!

Squishy Circuits Heart

We love our Squishy Circuits. In this version, we made a heart light up. 4th graders will love it.

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!

Valentine Binary Coding Bracelets

Some 4th grade kids already have crushes on their classmates. With binary coding bracelets, they can express their feelings in secret. And they will also learn a bit of coding.

Love Valentine's Day but don't want to give up on learning? Combine elements of the holiday and STEM when you make this deign a love bug craft challenge!

Valentine Design a Love Bug Engineering

Fourth graders will love building their own love bug. Design is an important part of engineering, and this activity focuses on that.

Engineering activities for kids teach a lot of useful skills, like circuits, properties of matter, physics, design, spatial awareness, and more! Kids will have a blast with these engineering activity ideas and engineering for kids has never been so fun!

Valentine Engineering: Build a LEGO Heart

It’s harder to build a heart from LEGOS that you might think at first. This activity will keep a group of 4th graders busy for a while.

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!

Valentine DIY Bouncy Ball

If you’re a bit brave, then you can do this Valentine bouncy ball STEM activity with 4th graders. Since the mixture bounces, there will be chaos in the classroom, but if you’re open to that, why not?

4th grade valentine stem challenges

Valentine Conversation Heart Structures

Children can practice balancing and design skills by stacking conversation hearts. Personally, I feel like conversation hearts are much better used as a building material than a candy.

Conversation Heart Venn Diagram Factors

If your 4th graders are learning about the factors of numbers, then this activity is perfect for Valentine’s Day.

4th grade valentines stem
valentine stem challenges

Save this idea for later so you don't forget to use it!