Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

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

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

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

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

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.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

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.

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

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.