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Third Grade Science Activities and Experiments

Our free, hands-on third grade science activities and experiments are the perfect way to empower third graders to learn cool stuff and think critically about the world around them. For more in-depth science projects, take a look at the Science Fair Project Ideas section of the site.

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Take to the air with science by experimenting with helicopter seeds right in your own backyard!
Third Grade
Nature Activities
From flower-filled fun to earth-conscious art, these springtime activities are a great way to celebrate the season. Enjoy the warmer weather, and get crafting with these simple DIYs.
Third Grade
Earth & Space Science
Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.
Third Grade
Physical Science
The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!
Third Grade
Physical Science
This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.
Third Grade
Physical Science
Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!
Third Grade
Physical Science
Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.
Third Grade
Life Science
Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.
Third Grade
Physical Science
Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.
Third Grade
Life Science
Nurture your budding naturalist with fantastic outdoor activities!
Third Grade
Nature Activities
We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.
Third Grade
Earth & Space Science
Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.
Third Grade
Physical Science
Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!
Third Grade
Physical Science
Science just got a little more fun. Try this medley of ooey-gooey experiments, colorful chemistry and even a little forensic science.
Third Grade
Physical Science
Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!
Third Grade
Life Science

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