This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

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

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This project investigates the affect of storage temperature on microwave popcorn.

This science fair project idea explores the egg's thin membrane.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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.

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.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?