Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

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

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

In this project students experiment with making music using only glasses of water.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

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.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Science fair project that uses iodine vapors to develop latent fingerprints on a non-porous object.

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

Help your preschooler craft a homemade wind spinning device--a surefire to make your backyard sparkle, and teach her a bit about weather!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Does your child know that salt water conducts electricity? This simple experiment will show how salt water acts as a conductor to electrical currents.

What's the quickest way to separate salt and pepper? Let static electricity do the work! Your child will be fascinated by this simple experiment.

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

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