Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Test your friends to find out if you can replicate the placebo effect's incredible results.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This science fair project idea explores how length affects the weight a bridge can hold.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

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 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.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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

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!

This project examines whether people's taste perception is influenced by what they see.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates how color affects temperature.

This science fair project idea investigates how the shape of an object affects drag.

This science experiment tests if dog saliva can really help heal wounds.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

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

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

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.