STEM Activities for Kids (482 results)

Build a Cooler

STEM Activity

131 reviews

How does a cooler keep things cold? Which material makes the best insulation? Try this project to find out how long you can keep an ice cube from melting once it's out of the freezer! Read more

Build a Marble Roller Coaster

STEM Activity

64 reviews

How much energy does a roller coaster need to go through a loop without getting stuck? Build your own marble roller coaster in this project and find out! Read more

DIY Mini Propeller Car

STEM Activity

84 reviews

Build your own mini propeller car with craft materials and a simple circuit in this fun STEM activity! Read more

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Make String from Algae

STEM Activity

210 reviews

Did you know that the seaweed you've seen in the ocean or even eaten as a snack is inspiring innovators to imagine new materials? Large brown algae, like kelp, contains polymers—long chains of molecules—that are more environmentally friendly than the ones in most plastics. These natural polymers (alginates) could eventually be used to create sustainable everyday objects. Try your hand at using a bit of chemistry to turn biodegradable polymers from algae into your own custom… Read more

How Many Colors in a Rainbow?

STEM Activity

47 reviews

Have you seen a rainbow in the sky after a rain shower? How many colors were there? A rainbow is often described as having seven colors: red, orange, yellow, green, blue, indigo and violet, but you might spot a rainbow and see fewer colors. Or you might see more than seven! It can be tricky to count the colors in a rainbow, because they all blend together so seamlessly. Want to see for yourself? In this activity you will explore the physics of light and create your own mini-rainbows. How many… Read more

Make a Kazoo

STEM Activity

43 reviews

Do you remember your last parade, party, or fair? You might have been surrounded by sounds of all kinds: fireworks, music, and, maybe even the famous (or infamous) sound of kazoos. A kazoo is a very simple musical instrument, made up of a hollow pipe with a hole in it. They may be simple, but these little noisemakers are a great way to explore sound. In this activity you'll be investigating how kazoos work by building your own! Read more

Make Your Own Marshmallows

STEM Activity

40 reviews

Whether you are huddled around a fireplace, or drinking hot chocolate after a day in the snow, nothing says fun quite like a marshmallow! Even its name is soft and spongy! Have you ever wondered how marshmallows are made? Long ago marshmallows were actually made from a plant, the marshmallow plant, but today we usually make them using a few key ingredients, namely gelatin, corn syrup, and sugar. In this appetizing activity you will get to explore what ratio of sugar to corn syrup produces… Read more

Balloon Magic with Bernoulli's Principle

STEM Activity

38 reviews

Have you ever seen pictures or videos of a roof being blown off a house during a hurricane or tornado? You might be surprised to hear that the roof is actually not pushed off by the strong winds but instead by the air inside the house! This can be explained by Bernoulli's principle, which states that fast-moving fluids or air, such as strong winds, have lower pressure than slow-moving air. In this activity you will demonstrate how balloons can be moved in a similar way. It is not quite as… Read more

Build a Gumdrop Geodesic Dome

STEM Activity

89 reviews

Have you ever seen a geodesic dome? Geodesic domes are approximately sphere-like structures made up of interconnected triangles. A famous geodesic dome is Spaceship Earth at EPCOT in Walt Disney World, Florida, but geodesic domes are also commonly found as climbing domes at playgrounds. In this science activity, you will get to build a simple geodesic dome using gumdrops and toothpicks. Once it is built, you may be surprised by how strong it is! Get ready to do some tasty engineering! Read more

Cumulus Maximus: Test WEATHER you can make your own cloud!

STEM Activity

34 reviews

Have you ever imagined yourself falling asleep on a cloud? Did you know that if you were to sleep in a cloud, you would wake up soaking wet!? There are many different types of clouds, but one thing they have in common is that they’re all made of water (or ice). But how do clouds form, and how is it possible that water can float above us in the air? In this experiment you’ll make your own cloud in a jar, and get to test the conditions that are required to make a cloud… Read more

How Do Melting Polar Ice Caps Affect Sea Levels?

STEM Activity

81 reviews

Have you ever noticed that if you leave an ice cube out on the kitchen counter and come back to check on it in a while, you find a puddle? The same thing happens to ice in nature — if the temperature gets warm enough, the ice melts. In this science activity, you will explore what happens to sea levels if the ice at the North Pole melts, or if the ice at the South Pole melts. Does melting ice at either cap contribute to a rise in sea levels? It is an especially important question for… Read more

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