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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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Showing 31 to 45 of 88
Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!
Third Grade
Life Science
Encourage your child to learn about air pressure by helping him devise his own squirt gun with a water bottle.
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
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
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
Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.
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
Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.
Third Grade
Life 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
Explore scientific concepts with this experiment that introduces kids to the scientific method!
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
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
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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