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This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

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

This science fair project idea produces sounds by creating vibrations using different objects.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

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.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Using a toy race car kids create a visual model of the Doppler Effect.

This science fair project idea produces varying pitches of sound.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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

This biodiversity project examines the biodiversity in your own backyard.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.