Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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

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

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

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

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

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

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.

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

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.

Experiment with magnetism in this 8th grade science activity in which your child will create a working compass using a steel needle, magnet, and jar.

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.

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.

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.

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!

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.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

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

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

This experiment investigates whether there are certain sounds that affect men and women differently

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

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

Here's one way to recycle: turn a tuna can into a mini barbecue and teach your child the power of resourcefulness!

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

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.