3rd Grade Science Activities

Browse through our third grade science activities. We have many 3rd grade science activities to keep your third grader learning on the fly, all year long. From from testing out your taste buds to building a barometer, you'll find our collection of third grade science activities below.

Make a Keyhole Spy Glass

Make a Keyhole Spy Glass

Combine the science of physics with the fun of playing spy. The next time your young detective is on a mission he can use his homemade spy glass. It's simple to make!

See the Science of Sound

See the Science of Sound

What causes sound? Here's a quick and easy science experiment that helps to add a visual element to the science of sound.

Make Gak: Experiment with Polymers

Make Gak: Experiment with Polymers

Did you know some substances can be both solid- and liquid-like? In this science activity, you and your child will experiment with an in-between state of matter: polymers! Mix borax with white glue and watch what happens!

Backyard Archeology

Backyard Archeology

Go on an archeological adventure by creating an excavation site in your very own backyard! This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Make Rose Petal Beads

Make Rose Petal Beads

Who knew that you could make beads out of rose petals? Crushing the rose petals releases their sweet essence, and can transform them into beautiful beads!

Play Indoor Golf with a Do-It-Yourself Putter

Play Indoor Golf with a Do-It-Yourself Putter

Let your child unleash his inner Tiger Woods with this fun activity. Not only will your child create his own golf putter but he'll also design his own putting course in a room of the house and play to his heart's content.

Design a Great Glass Xylophone!

Design a Great Glass Xylophone!

This amusing activity incorporates music into an educational science experiment! Your child will love learning about sound waves as he makes and plays sweet-sounding melodies on his very own glass xylophone.

Make a Galaxy Mobile

Make a Galaxy Mobile

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Balloon Air Pressure Magic

Balloon Air Pressure Magic

Warning all grownups: get your sense of humor ready for this science experiment, which demonstrates fundamental physics of air pressure.

Make a Back to Nature Backpack

Make a Back to Nature Backpack

Nature is the greatest teacher, and you can help facilitate the lesson with this backpack, ready for on-the-fly science action!

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