Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

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

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

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

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.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

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!

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

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.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

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

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.