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Simple and Spectacular Science Experiments in a Jar

We do a lot of science experiments for kids and STEM activities around here, and one common theme I noticed recently is that we do a lot of science experiments in a jar. 

Glass jars are amazingly versatile and most people have several sitting in their kitchen. You don’t need fancy beakers or other expensive science equipment to do these fun STEM activities.

Jars are a surprisingly powerful learning tool. In this list, you'll find a collection of STEM activities and science experiments in a jar! #teachingstem #stemactivities #stemed #stem #steamactivities #scienceteacher #science

All of these ideas are clever, simple, and fun science experiments in a jar. Kids will love these creative ideas and parents and educators will love the affordable cost!

These jar science projects are so much fun and will keep kids talking about the lesson long after the science jar is cleaned up.

And go here for more mason jar sciene experiments!

Jars are a surprisingly powerful learning tool. In this list, you'll find a collection of STEM activities and science experiments you can do in a jar!

Try these fun science jars today!

Why Do Science Experiments in Jars?

You may be wondering?

Why jars?

Why are science experiments in a jar a thing?

Well, mason jars are typically made of glass. This makes them similar to science flasks and beakers- except, that most of you have at least a few mason jars in your house.

So, a jar is the perfect starting science tool for children just getting into science who may not have a full set of “official” science tools.

With mason jar science projects, children can get started with science right away, and they don’t need to get any special tools.

As a parent, it’s nice to have a list of screen-free activities that you can offer up to kids when they declare boredom, as is inevitable during summer and other school breaks.

And as a teacher, mason jars are easy to use in the classroom because they are less expensive than “real” science tools and you can even ask parents to donate mason jars to use in the classroom for science experiments.

You can teach everything from geology to chemistry in a jar- and even learn about space in a jar, too!

What do you need to get started with science experiments in a jar?

Jars are a surprisingly powerful learning tool. In this list, you'll find a collection of STEM activities and science experiments in a jar! #teachingstem #stemactivities #stemed #stem #steamactivities #scienceteacher #science

You don’t need much to get started with science experiments in a jar! Just a few things, like:

  • Mason jars
  • Thermometer
  • Food coloring
  • pH strips
  • Pencils
  • Oil
  • Vinegar
  • Baking soda
  • Magnifying glass
  • Magnets

Learning Resources Super Magnet Lab Kit, STEM Toy, Critical Thinking, 119 Pieces, Ages 5+Learning Resources Super Magnet Lab Kit, STEM Toy, Critical Thinking, 119 Pieces, Ages 5+Ball Glass Mason Jar with Lid and Band, Regular Mouth, 12 JarsBall Glass Mason Jar with Lid and Band, Regular Mouth, 12 JarsThe Mason Jar Scientist: 30 Jarring STEAM-Based ProjectsThe Mason Jar Scientist: 30 Jarring STEAM-Based ProjectsMagnifying Glass 3X Handheld Reading Magnifier - 100MM Large Magnifying Lens with Non-Slip Soft Handle for Book Newspaper Reading, Insect and Hobby Observation, Classroom Science (3X-100MM)Magnifying Glass 3X Handheld Reading Magnifier – 100MM Large Magnifying Lens with Non-Slip Soft Handle for Book Newspaper Reading, Insect and Hobby Observation, Classroom Science (3X-100MM)Arm & Hammer Baking Soda, 80 OunceArm & Hammer Baking Soda, 80 Ounce30% Pure Vinegar - Home&Garden (1 Gallon)30% Pure Vinegar – Home&Garden (1 Gallon)Lucy's Family Owned - Distilled White Vinegar, 1 Gallon 128oz. (Pack of 2)Lucy’s Family Owned – Distilled White Vinegar, 1 Gallon 128oz. (Pack of 2)Crisco Pure Vegetable Oil, 64 OunceCrisco Pure Vegetable Oil, 64 OunceAmazonBasics Pre-sharpened Wood Cased #2 HB Pencils, 150 PackAmazonBasics Pre-sharpened Wood Cased #2 HB Pencils, 150 PackLitmus pH Test Strips, Universal Application (pH 1-14), 2 Packs of 100 StripsLitmus pH Test Strips, Universal Application (pH 1-14), 2 Packs of 100 StripsFood Coloring Liqua-Gel 12 PK (9 oz, 264 mL) - 12 Bold Primary Color Kit in .75 fl. oz (22mL) Bottles - For Baking, Decorating, Fondant, Cooking, DIY Slime, Crafts and MoreFood Coloring Liqua-Gel 12 PK (9 oz, 264 mL) – 12 Bold Primary Color Kit in .75 fl. oz (22mL) Bottles – For Baking, Decorating, Fondant, Cooking, DIY Slime, Crafts and MoreEtekcity Lasergrip 774 Non-contact Digital Laser Infrared Thermometer Temperature Gun -58℉~ 716℉ (-50℃ ~ 380℃), Yellow and BlackEtekcity Lasergrip 774 Non-contact Digital Laser Infrared Thermometer Temperature Gun -58℉~ 716℉ (-50℃ ~ 380℃), Yellow and Black

With these simple supplies, plus a few extra from the classroom or home, you’re all set to teach tons of scientific concepts, all inside of a jar.

Click on each project listed below to be taken to instructions and a list of supplies necessary for each project.

elementary stem challenge cards

Spectacular Science Experiments in a Jar

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If you have some old jars lying around (our favorite jars to use are mason jars) then you’re all ready to try these science experiments you can do in a jar!

It’s so easy to get started with Mason jar science experiments!

Don’t Miss: Even More Science Experiments in Jars

And if you can’t get enough of these science experiments in a jar, check out The Mason Jar Scientist!

Weather Science Experiments in a Jar

Jars are a surprisingly powerful learning tool. In this list, you'll find a collection of STEM activities and science experiments in a jar! #teachingstem #stemactivities #stemed #stem #steamactivities #scienceteacher #science

Kids will love these weather science experiments. All you need to get started is a jar! Learn about weather patterns, temperature, why weather happens, and more!

Tornado in a Jar

Raining Rainbow in a Jar 

Raining Cloud in a Jar 

Density Science Projects in a Jar

Learn all about density inside of a jar! Learn about density versus mass, how to calculate density, how you can “see” density, and more!

Liquid Density in a Jar 

Diving Fish Experiment

Sugar Density Tower

Rainbow Density Jar

Egg Science Projects in a Jar

Nothing is more fun than learning about eggs! Jars make it even more fun. Learn about osmosis and acids and bases!

Rainbow Naked Eggs

Osmosis Egg Experiment

Chemistry Science Experiments in a Jar

Jars are a surprisingly powerful learning tool. In this list, you'll find a collection of STEM activities and science experiments in a jar! #teachingstem #stemactivities #stemed #stem #steamactivities #scienceteacher #science

Chemistry has never been as fun as it is inside of a jar! Learn about crystals, chemical reactions, non-Newtonian fluids, and more!

Salt Crystal Science

How to Make Butter in a Jar

Galaxy Oobleck in a Jar

Plant and Earth Science Experiments in a Jar

Earth science experiments? Check. In a jar? Check again! Learn what colors are in leaves, what soil is best for seeds, how plants drink and breathe, and much more!

Seed Growing Experiment

Leaf Chromatography Experiment

Build a Desert Biome in a Jar

Color Changing Flowers 

How Trees Breathe

Light Science Experiments in a Jar

These light science experiments are all done in a jar and are super fun for kids! Bend water and explore color theory in these experiments!

Walking Water Rainbow

Bending Pencil Experiment

elementary stem challenge cards

More Fun Science Experiments to Try

Classic Science Experiments

Candy Science Experiments

Active Science Fair Projects

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