Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

This science fair project idea identifies trees using a dichotomous key.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

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?

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This science project teaches students to classify different shapes of leaves.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Discover how and which salt melts ice the quickest.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!