Physics STEM Activities for Kids (123 results)

The Physics of Bottle Flipping

STEM Activity

64 reviews

The bottle flipping craze might be dying down, but it isn’t too late to investigate the physics of this internet sensation. Even if you’ve never heard of it, give this project a try – not only can you impress your friends with a fun new trick, you’ll be able to explain the science behind it! Read more

Make a Milk Rainbow

STEM Activity

136 reviews

Have you ever seen a rainbow after a rainfall, or drawn a rainbow for fun? They can be fun to make using colorful markers or other craft supplies. But did you know you can actually make a simple rainbow using milk, liquid detergent (i.e., soap), and food coloring? How the rainbow is created by this mixture might surprise you! In this science activity, you will make your own milk rainbow and explore how detergent and surface tension are involved in its creation. Read more

Build a Water Strider

STEM Activity

56 reviews

Have you ever seen a water strider (also called water bugs, pond skaters, water skippers etc.)? They are bugs that effortlessly hop around on the surface of ponds, lakes, and rivers. How do they do it without sinking? Try this project to find out! Read more

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Make String from Algae

STEM Activity

222 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

Make a Rubber Band Guitar

STEM Activity

172 reviews

Did you know that the modern guitar is an instrument that dates back over 4,000 years? The first guitar music was published in 1546, during a time when guitars still had strings made from animal intestines! While guitars have a long history, they are still extremely popular in modern day music. Have you ever wondered how they make the music you listen to everyday? In this activity we're going to make our own guitars, and experiment with the different sounds we can create. Read more

Making Shadow Puppets

STEM Activity

85 reviews

Have you ever played with your own shadow? It is fascinating how it follows your every move. But why do you not see your shadow every day? Why is your shadow very long sometimes, and other times very short? In this activity, you will make your own shadow puppet and explore how you can change the shape or size of its shadow. If you like, you can even create your own shadow play! Read more

Build a Cooler

STEM Activity

135 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

71 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

Discover the Flaming Colors of Fireworks

STEM Activity

39 reviews

Have you ever watched a fireworks show and wondered how all the different colors — amazing reds, yellows, oranges, blues, purples, greens, and more — are made? The color, or colors, that a firework makes depends on what color-producing chemicals are in the firework. These chemicals are various metal salts that burn when the firework goes off, and burning the metals is what makes the colors. Different metals give off different, specific colors. In this science activity, you will get… Read more

Popsicle Stick Trusses: What Shape is Strongest?

STEM Activity

48 reviews

Have you ever driven across a bridge or seen a building that is under construction and noticed the large metal support beams? What about all the wooden beams in a house that is under construction? Did you notice how sometimes the beams formed different geometric shapes, like triangles or squares? In this project you will be a structural engineer and make your own “support” shapes out of popsicle sticks. What shape will be the strongest? Read more

Holes That Do Not Leak!

STEM Activity

43 reviews

Did you know that at sea level there are about 15 pounds of air pressing on each square inch of your body? This air is very helpful in our daily lives. For example, this layer of air helps to keep the Earth from getting inhospitably cold or hot. It can even help keep a bottle with holes in it leak-free! Try the activity to find out how. Read more

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