One of my favorite tools for doing science and STEM is a simple glass jar (you can also use plastic with younger kids!).
Jars are perfect for measuring, experiments, and all kinds of learning, and their clear apperance makes it easy to see reactions!
Keep reading to find a list of our favorite mason jar science experiments!
How I got into mason jar science experiments
When my oldest was four, I wanted to help her learn to love reading.
I got out all my favorite books, many of which had fantasy themes.
But she HATED those books.
I was confused. What kid doesn’t like fantasy books?
So, I took her to the bookstore and let her pick out the books.
She picked books on animal science, weather science, and chemistry.
Science was my most hated subject in school, so I was in trouble.
How could I foster her love of science when I didn’t know much about science?
After thinking a while, I realized we could do fun science experiments together. She’d be learning, and I’d be learning right along with her!
I didn’t have any formal science equipment, so I used what I had. Which happened to be mason jars. So, we started doing Mason jar experiments!
That was over 7 years ago, and since then, we’ve done hundreds of science experiments for kids and STEM activities, most of which were done in jars!
Now, we have the Jarring Science Club so you can do your experiments in jars, too!
Mason Jar Experiments to Try at Home
If you love doing quick science experiments that wow, try these incredible mason jar science experiments!
Why Do Mason Jar Science?
Today, science experiments for kids are more important than ever.
Science and technology are huge parts of our world today, and the future will be even more science and tech-focused.
Kids who aren’t immersed in the world of science and STEM exploration from a young age will be left behind their peers, and may struggle to find work in the fast-changing landscape of future careers.
The simple science experiment that a child does today may spark their desire to discover something that will change the world in the future.
Every day, young children are using science experiments to solve real-world problems in medicine and technology that have never been uncovered before.
And all these scientific discoveries start with a firm foundation in science and STEM.
Don’t Miss: 31 Creative STEM Activities for Kids
WHY DO SCIENCE IN MASON JARS?
You certainly don’t have to use mason jars for science. We’ve also used pickle jars, olive jars, jelly jars, and baby food jars.
But the main benefit of using a mason jar for science is that they are glass. Plastic isn’t a suitable material for many science experiments, because it can warp or melt.
Glass, on the other hand, is what most science equipment is made of and creates purer results.
THE MASON JAR SCIENTIFIC METHOD FOR KIDS
Every science experiment contains four elements:
Kids should start every science experiment with a question, even if that question is just “what will happen?”
Before doing any experiment, children should record what they believe will happen.
This is where the fun part comes into play. Test the hypothesis to determine if it answers the question fully.
A Recording and Analysis
As the test is completed, record what happened and analyze why.
Try different variables and try a new test to see if the original answer is confirmed or disproved.
Learn & Climb Kids Science Kit – Over 60 Experiments, Fun with Science!Scientific Explorer Scientific Explorer Magic Science for Wizards Only Kids Science KitCIRO solar robot kit 12 in 1 educational STEM learning science building toys for kids age 8-12Snap Circuits Jr. SC-100 Electronics Exploration Kit, Kids Building Projects Kits, Stem Engineering Toys for Kids 8+Soap & Bath Bomb Making Kit for Kids – 3-in-1 Spa Science Kits For Kids : Complete Soap Making Kit & Make Your Own Bath Bombs, Soap & Bath Scrubs : Kids Science Kit For Kids – Gift for Girls and BoysScientific Explorer Disgusting Science KitLearn & Climb Erupting Volcano Science Kit for Kids- 15 Experiments!Klutz Lego Chain Reactions Science & Building Kit, Age 84M 4605 Water Rocket Kit – DIY Science Space Stem Toys Gift for Kids & Teens, Boys & GirlsGiggleway Electric Motor Robotic Science Kits, DIY STEM Toys for kids, Building Science Experiment Kits for Boys and Girls-Doodling, Balance Car, Reptile Robot (3 kits)2Pepers Electric Motor Robotic Science Kits for Kids (4-in-1), DIY STEM Toys Kids Science Experiment Kits, Building Educational Robotics Kit for Boys and Girls,Circuit Engineering Science Project KitsLearn & Climb Science Kit for Kids – Set Includes Over 65 Science Experiments + Scientist Name tag!Dino Soap Making Kit for Kids – Dinosaur Science Kit for Kids : Great Gift for Girls and BoysLight-up Crystal Growing Science Experiments Kit for Kids – Grow Your Own Crystals and Make Them Glow : Best Gifts for Kids, Boys & Girls – STEM Toys – Crystal Making Science Kits – (Red White Blue)Thames & Kosmos Simple Machines Science Experiment & Model Building Kit, Introduction to Mechanical Physics, Build 26 Models to Investigate The 6 Classic Simple MachinesThe Mason Jar Scientist: 30 Jarring STEAM-Based Projects
You may also like: More Science Experiments in Jars
Get Ready-to-go Science Kits!
If you love science and STEM but don’t like hunting for supplies, we love the Mel Science kits. They have options for elementary and middle school, and each kit comes with all the supplies needed for each experiment!
Easy Science Experiments in a Jar You Can Do at Home
Try these mason jar science experiments in the classroom or at home!
Science Projects in a Jar
These science experiment jars are easy to put together and are perfect for science fair projects!
Hot and Cold Water Density Experiment in a Jar
Osmosis for Kids Science Experiment in a Jar
How to Make a Calm Down Jar with Variations
Photosynthesis Science Experiment in a Jar
Slime Volcano Science Experiment
Rainbow Naked Egg Science in a Jar
Seed Sprouting Experiment in a Jar
Salt Crystal Feathers in a Jar
Spring Jar Experiments
Try these mason jar science experiments with a spring theme!
Summer Science Jars
These science jars have a summer theme!
Fall Experiment Jars
Make these fall-themed experiments in a mason jar!
Salt Crystal Leaves Science Experiment
Winter Mason Jar Experiments
This winter, make these winter mason jar experiments! Find more winter science in jars here.
Valentine Confetti Slime in a Jar