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Third Grade Science Activities and Experiments

Browse through our Third Grade science activities & experiments. We have many Third Grade science activities to keep your student learning on the fly, all year long. For more in depth science projects, take a look at the Science Fair Project Ideas section of the site.

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This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.
Third Grade
Life 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
If your mom likes flowers, make her a sweet gift that she'll treasure with this fun craft, a pretty Pressed Flowers Card!
Third Grade
Nature Activities
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
This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.
Third Grade
Physical 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
This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.
Third Grade
Earth & Space Science
Explore scientific concepts with this experiment that introduces kids to the scientific method!
Third Grade
Physical 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
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
This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!
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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