We love science, and are always trying to find cool ideas for science experiments for kids. With Valentine’s Day coming up, I found 9 heart-themed simple science experiments for kids. They are all easy experiments, but kids will have fun and learn science research skills at the same time.
Science Experiments with Hearts for Kids
The simplest science about the heart is to measure the heart rate of different conditions. How is it different between after running and sitting?
While talking about heart rate, you can also talk about the heart and the circular system – in a kid-friendly way of course.
You can even make a heart pump while listening to the song about blood flow.
Do you want to know how blood flow in the heart? This heart model made from drinking water bottles is a great way to help kids understand the structure of the heart, the 4 chambers, and the valves to set the blood flow direction.
RELATED: 14 Valentine STEAM Activities for Kids
I love this simple Stethoscope, it is so easy to make. Kids can listen to others’ hearts beat. Besides talking about heart and heart rate, it is also a good way to learn to count and introduce concepts like rate, and speed.
Kids will never get tired of bubbling or sizzling experiments, this vinegar frozen heart will for sure delight kids of all ages. After the excitement, don’t forget to explain the science of the fun.
Dancing heart is so fun to watch. Do you know why the hearts are dancing?
I like the setup of this heart candy dissolve experiment, kids learn scientific comparison and observation, plus data recording.
RELATED: Make a Squishy life-size Heart in Your Kitchen
Icy Heart Race is another way to learn science observation and data recording, but can really get kids excited while doing it.
What can you do with all those conversation heart candies? This science experiment is a good idea.
Hope you enjoy the heart science fun with kids!
To learn more about the heart and circulatory system of the human body, check out 10 YouTube Science Videos Teaching Kids Circulatory System
For a fun Valentine STEM activity, try Mobius Strip Interlocked Hearts and 70+ Science Valentine’s Cards for Kids
For more seasonal fun learning activities for kids, please check out 300 Free Valentine Math Worksheets for Kids, and 6 Snow Science Experiments for Kids.
It is wonderful how you relate science to Valentine’s Day.
It makes science more interesting for kids. Glad you like these ideas.
Thanks for featuring us. 🙂
you are welcome. Love all your science ideas.