This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

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.

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

This science fair project idea investigates how color affects temperature.

Examine the effect of pressure on carbonation in soda.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

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

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project investigates why the number of visible stars changes from place to place.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

This project compares the strength of one, two, and three-ply toilet paper.

In this science fair project, students create their own miniature salt flats at home.