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Fourth Grade STEM Activities for Kids (236 results)

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Build a Solar Updraft Tower
STEM Activity
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204 reviews
Have you ever had a sunburn? If so, you know how powerful the Sun's heat can be! Did you know that this heat can also be turned into electrical energy? You may have heard about solar cells, but what about a solar updraft tower? This very simple structure uses the sun to heat up air, which then powers a turbine within a large tower. In this activity, you will build one of these towers yourself. Do you think you can make a propeller spin with just hot air? Read more
Build a Two-Stage Balloon Rocket
STEM Activity
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65 reviews
If you have ever watched a rocket launch on TV, you might have noticed that rockets have multiple stages. Some parts of the rocket fall off and burn up in the atmosphere whereas the rest of the rocket keeps going. Why does this happen? Try this activity to find out and build your own two-stage rocket using balloons! Read more
Make a Rubber Band Guitar
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170 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
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Make String from Algae
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221 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 Tie-Dye T-shirts with Permanent Markers
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24 reviews
Have you ever made a tie-dyed t-shirt? It can be a lot of fun to dye a shirt in bright colors with spiraling designs (especially when it is done on a warm day outside to prevent indoor messes)! In this science activity, you will get to dye a t-shirt with your own colorful artwork using permanent markers. Along the way, you will find out how solubility helps your drawings leave beautiful designs on the fabric. Read more
Model the Distances between Planets in our Solar System
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100 reviews
Did you know that the Voyager 2 spacecraft took 12 years to travel from Earth to Neptune, the furthest planet in the solar system? This sounds like a really long time! Maybe not that long if you consider what distance the spacecraft had to travel to get from Earth to Neptune. In this activity, you will make a model of the planets in the solar system and specifically model their distances to scale. Will it explain why the Voyager 2 took so long? Try it and see! Read more
Model Your Blood Flow
STEM Activity
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65 reviews
Why is it important to eat healthy and exercise? If you don't, you might end up with a cardiovascular disease. These diseases are conditions that affect your heart and blood vessels. The job of your cardiovascular system is to transport blood through your heart, veins, and arteries, to provide oxygen and nutrients to your body. If this blood flow doesn't work properly anymore, it can have serious consequences. In this activity, you will find out what happens to the blood flow of people that… Read more
Blowing the Best Bubbles
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45 reviews
If you have ever tried to make bubbles using plain water, you may have seen that it does not work. This is because the surface tension of water is too high. When detergent is added to water, it lowers the surface tension so that bubbles can form. Other things can be added to this mixture, such as corn syrup or glycerin, to make a solution that is even better for creating bubbles. In this science activity, you will find out which solution creates the best bubbles! Read more
Build a Gumdrop Geodesic Dome
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91 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
Build a Marble Roller Coaster
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67 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
Can You Hide in Plain Sight?
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24 reviews
If you could choose to be an animal, would you rather be a predator or prey? For prey animals, survival in the wild means a daily struggle to escape potential predators. Predators, on the other hand, have to work very hard to make a catch. Some prey animals have evolved clever strategies to protect or defend themselves against predators. One common strategy is camouflage. Camouflage allows animals to blend into their surroundings so predators can't see them. Will this strategy increase an… Read more
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