Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This science fair project idea explores the fastest average speed a human can talk.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

In this science fair project idea, kids make water dance on the surface of a hot pan with the Leidenfrost Effect.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

This science fair project idea determines the probability of a coin landing heads or tails.

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

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

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.

This experiment explores how microwave radiation affects fungi, bacteria, and plant life.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

This science fair project investigates how temperature of a room affects the burn rate of a candle.

Learn about the factors that influence group conformity.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Explore the concept of receptive fields and why different parts of our body have different levels of sensitivity.