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.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

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.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

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.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

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.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

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.

This project explores ways to prevent static electrical shocks.

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

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.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

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!

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!