How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Help your child celebrate the summer and the sun by making a sandy seascape.

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Create homemade seed packets with your kids. This activity combines your kids' love of science and the outdoors with a little writing and drawing fun.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

In this science fair project, students make their own rain gauge to measure rainfall.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

In this project, a basketball containing different psi is dropped to see how well it bounces.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!

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?

This basketball project explores the best way to make the perfect shot every time.

Play this flashlight game with your child to teach him about objects that are transparent, translucent, and opaque.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

This biodiversity project examines the biodiversity in your own backyard.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!