In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science fair project idea compares biodiversity between drops of water.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This science fair project idea examines the reason boats are shaped and engineered.

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.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this project children practice the scientific method while playing with puffy paint.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Cleaning can be a chore, but not with this sudsy experiment!

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.