Ah, Valentine’s Day! It’s a time to give kisses, cuddles and, of course, sweet little heart-shaped chocolates. It’s also a time for science experiments. Yep, that’s right. Your creative kid can combine this love-ly holiday theme with explorations and activities that are all-out fun! Read on for cool science experiments with tons of heart.
Dissolving Candy Hearts
Explore the science of your child's fave Valentine's Day candy. Save a few of those cute conversation hearts, toss them into warm water and wait (and watch, of course) to see what happens. Repeat the science experiment with cool water, veggie oil, milk or any other liquid.
Valentine's Day Slime
Mix up a batch of your favorite slime recipe—but with a Valentine's Day theme. Use clear glue to make clear slime, and add red and pink glitter and heart-shaped sequins for some extra-special holiday fun. Get a basic slime how-to here.
Invisible Heart Reveal
What happens when you mix oily petroleum jelly with watercolors? Let your little one find out when she finger paints a heart using petroleum jelly. Not only is this a super-cool sensory experience (exploring texture) but it's also the first step in a discovery-based Valentine's Day science experiment for kids. While the heart's still sticky, have your child paint a wash of watercolors over it. Whoa. The paint won't stick! Now it's time for your child to figure out why!
Part love potion, part lava lamp, we're totally crushing on this concoction from Agnes at Hello, Wonderful. Using simple ingredients you probably have in your pantry, you can whip up your own version in no time. Click here to get started.
Tissue Paper Science
The red tissue paper that your tot is using to decorate his Valentine's Day card box isn't staying put. That is, the color isn't the staying put. What's going on here? Use the tissue paper's amazing ability to transfer color as the starting point for a cool science experiment. Cut non-color-fast red tissue paper into heart shapes. Have your child drop the hearts into a cup or bowl of water. Now watch what happens. Ask your kid why the water is suddenly red. After exploring the color transfer process, use the red water to paint hearts or other Valentine's pictures onto construction or drawing paper.
A fizzing eruption experiment may not seem like it could possibly have a Valentine's Day theme, but it can. Try this simple fizzy eruption activity from Mama Papa Bubba. But instead of a rainbow of hues, only use holiday colors such as red and pink. This beginning chemistry experiment helps your child to understand reactions on a basic level.
Get messy ... um, or clean. This soap foam science exploration activity from Hands On As We Grow is sensory fun for your child. Add holiday-themed colors to make this into a Valentine's Day soap-stravaganza.
Wax Paper Stained Glass
What happens to crayons when you heat them? Um, you can make stained glass! Sort of. You'll need to do the heating part. But your child can do the prediction, observation and coming to conclusions part—as they figure out how this magic is happening. Get the how-to here.
Decorating a valentine with glitter, paints and markers is the norm for this heartfelt holiday. But that doesn't mean you can't throw in a science experiment too. Forget about the usual suspects and help your kiddo to dress-up their handmade cards with sensory soap. Microwave plain Ivory soap in 10-second increments and ask your child to predict what will happen. Stand back and don't let your child touch the hot soap (psst: It will grow, loop and flow into an awesomely puffy cloud when heated). When the soap cools, flake into pieces. Cut out a construction paper heart, add glue and sprinkle the sensory soap flakes on top.
Color Changing Flowers
Instead of giving a dozen red roses, your child can give friends and family a bouquet of super-scienced-out ones! Check out this color changing flower science experiment from Little Bins for Little Hands. And then give them rainbow-hued products as Valentine's Day gifts.