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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.

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.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

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

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Word color association is just a fancy way to talk about the way we connect colors with words.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

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.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

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

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

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.

Discover whether cold or hot water from the faucet will boil faster on the stove.

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

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Start your toy engines -- this is going to be a fast and friction-filled race!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

This science fair project idea investigates how the shape of an object affects drag.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.