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Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

In this fun science experiment, make a balloon car and test it on different surfaces to learn about sliding friction and rolling friction.

Science fair project that determines the correlation between wind direction and subsequent weather patterns.

This science fair project idea determines which flower lasts the longest.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Study blind spots, run experiments in blind spot detection, design an original blind spot experiment, test your design on volunteers

Determine how good we are at direct and indirect observation.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

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?

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.

In this science fair project, students make their own rain gauge to measure rainfall.

This science fair project idea investigates how images are influenced by changes in light.

This project examines the concentration of dissolved oxygen in water, with and without oil.

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!

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

This science fair project idea determines if material and tensile strength of different types of skateboard wheels affects the velocity of the skateboarder.

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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