How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science fair project idea explores substances that cause a bubble to last longer.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Start your toy engines -- this is going to be a fast and friction-filled race!

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 determines what household items are good conductors of electricity.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

This science experiment has students test whether a snail moves faster on concrete or dirt.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Discover whether a metal will expand under hot water.

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

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

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

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

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

This science fair project idea demonstrates that plants give off water.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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.