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Seventh Grade STEM Activities for Kids (188 results)

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A Candle Seesaw Balancing Act
STEM Activity
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26 reviews
Do you love playing on a seesaw? Why is it that depending on where you sit on the beam, and the weight of the person on the other side, you either fly up into the air or fall down to the ground? And why is it so difficult to perfectly balance the seesaw? It can all be explained with physics! In this activity, you will investigate the balancing forces of a seesaw—with a seesaw made of candles! Read more
A Sweet Earthquake Shake on Landfill
STEM Activity
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8 reviews
Have you ever thought about what type of ground buildings are constructed on? Rock, gravel, sand, soil and many others—there are lots of different types of "ground." And this issue becomes especially important in areas that are likely to get earthquakes. In this activity you will build a sweet building on a homemade shake table and find out how an earthquake impacts buildings constructed on landfill. How will your structure perform in a pretend earthquake? Read more
Build a Bathtub Toy Raft Powered by Surface Tension
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10 reviews
Have you ever wondered why a water strider can walk on water? Or how detergent can clean your dishes? If you look around you carefully, you can find dozens of similarly interesting phenomena that are all linked to the surface tension of water. In this science activity, you will make a little toy raft that is actually powered by surface tension, and use your vessel to investigate how surface tension works! Read more
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Make String from Algae
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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
Build a Differential from K'Nex®
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10 reviews
What in the world is a differential and what does it do? A differential is a mechanism that helps cars go around turns without the wheels slipping. In this activity you will build your own working model differential from a building toy like K'Nex®! Read more
Build a Sandcastle That Can Support a Brick
STEM Activity
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11 reviews
Can you build a sandcastle that can support a brick? Try it out in this fun STEM activity! Read more
Build a Water Sprinkler Toy
STEM Activity
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5 reviews
Do you enjoy playing with water? Have you ever considered building a water sprinkler toy? It is easier than it looks! Get some PVC pipes, a few connectors, and a backyard water hose, then drill a few holes and start connecting! What will be your most creative and most fun design? Read more
Build an Ion Wind Rotor
STEM Activity
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3 reviews
Can you use electrically charged "wind" to make something move? Find out in this fun project as you build your own ion wind rotor. Read more
Candy Lightning: A Flashy Activity
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4 reviews
Did you know that instances of miniature lightning can occur in your mouth when you bite on a hard candy? Would it not be fascinating if you could observe these light flashes? Life Savers® Wint O Green® mints might just be the tool we need to observe this science! Crush them, observe, and detect what makes the flashes visible. How many sparks can you see? Read more
Candy Waterfalls: Can Candy Flow Like Water?
STEM Activity
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86 reviews
Have you ever poured sand out of a bucket, or poured cereal out of a box, and noticed it is a lot like pouring water? It is because sand and cereal are granular materials. This means they are made up of solid particles, but they can actually flow like liquids! Candies, like Skittles®, M&M's®, Nerds® candies and many others, are also granular materials. In this science activity, you will investigate how the size and shape of granular materials affect how they flow. And what… Read more
Design a Back Scratcher
STEM Activity
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25 reviews
Don't you hate it when you have an itch you can't reach right in the middle of your back? Engineer a solution to the problem and build your own back scratcher in this fun activity! Read more
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