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 goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This activity is a fun way for your first grader to learn about how veggies help your body while being creative with art and drama. Here's how to get started.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Brighten up your home with this fun activity! Make a summer sun print and teach your child the art of easy print making.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

With some cookie dough and ordinary household objects, let your kindergartener explore how fossil imprints are made.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

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

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

This craft is an excellent way to learn about African-American history, and it also provides fine motor practice.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.