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!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Do different types of oil mix or stack? Find out in this science fair project idea!

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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.

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

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Determine if gender affects the ability to identify different smells.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

In this design challenge, your child will create a parachute for a small toy using typical household items.

Do you think heat can affect a plant's growth rate?

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This science fair project idea examines which type of insulation holds in the most heat.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

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.