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Third Grade Physical Science Activities

Third grade physical science activities take science concepts that kids learn in the classroom and put it into practice! These fun science projects for third graders include a range of concepts, from air pressure and sound to chemistry and color theory. Browse the complete collection of third grade science activities for more fun science education on a wide range of topics.

Current Filters (36 results): 36 filtered results

3rd grade

Physical Science

Current Filters (36 results): 36 filtered results

3rd grade

Physical Science

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Superhero Strength

Superhero Strength

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!

3rd grade

Science

Activity

Homemade Submarine

Homemade Submarine

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

3rd grade

Science

Activity

Pop Bottle Science

Pop Bottle Science

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

3rd grade

Science

Activity

Make a Water Magnifier!

Make a Water Magnifier!

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

3rd grade

Science

Activity

Make Homemade Glue!

Make Homemade Glue!

This surprisingly good glue recipe comes from common kitchen items.

3rd grade

Science

Activity

Make Your Own Marshmallows

Make Your Own Marshmallows

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

3rd grade

Science

Activity

Balloon Air Pressure Magic

Balloon Air Pressure Magic

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

3rd grade

Science

Activity

Sunscreen Experiment

Sunscreen Experiment

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

3rd grade

Science

Activity

The Science of Sound

The Science of Sound

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

3rd grade

Science

Activity

Design a Floating Cork Boat

Design a Floating Cork Boat

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

3rd grade

Science

Activity

Nice Shades! How Light and Color Affect Sight

Nice Shades! How Light and Color Affect Sight

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!

3rd grade

Science

Activity

Make a Paper Helicopter

Make a Paper Helicopter

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.

3rd grade

Science

Activity

Homemade Barometer

Homemade Barometer

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

3rd grade

Science

Activity

Make a Balloon Stick to the Wall Like "Magic"

Make a Balloon Stick to the Wall Like "Magic"

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

3rd grade

Science

Activity

Design a Great Glass Xylophone!

Design a Great Glass Xylophone!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

3rd grade

Science

Activity

Create a Constellation

Create a Constellation

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

3rd grade

Science

Activity

Test the Power of Baking Powder

Test the Power of Baking Powder

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

3rd grade

Science

Activity

Measure the Moon

Measure the Moon

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

3rd grade

Science

Activity

Make Gak: Experiment with Polymers

Make Gak: Experiment with Polymers

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

3rd grade

Science

Activity

Build a Popsicle Stick Bridge

Build a Popsicle Stick Bridge

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

3rd grade

Science

Activity

Play Forensic Flashlight Tricks

Play Forensic Flashlight Tricks

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

3rd grade

Science

Activity

Bounce an Egg

Explore scientific concepts with this experiment that introduces kids to the scientific method!

3rd grade

Science

Activity

Make a CSI Kit

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

3rd grade

Science

Activity

Make Your Own Glass Cleaner

Make Your Own Glass Cleaner

Making your own glass cleaner is easy, effective and inexpensive!

3rd grade

Science

Activity

Make a Keyhole Spy Glass

Make a Keyhole Spy Glass

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

3rd grade

Science

Activity

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