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Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.