This science fair project idea explores how length affects the weight a bridge can hold.

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

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

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

2011 VIRTUAL SCIENCE FAIR ENTRY: The objective of this science fair project is to develop a microcontroller and circuit that can conduct electricity.

Science fair project that explains and demonstrates the parallax principle.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project teaches students the differences between fruits and vegetables.

The purpose of this science fair project is to build a basic radio.

Science fair project that builds a magnetometer and demonstrate its uses.

This science fair project demonstrates the "power of conformity".

Science fair project that illustrates the properties of black holes in space.

This science fair project idea investigates the hardness property of minerals.

This science fair project idea investigates how color affects temperature.

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

This science fair project idea explores which fruit molds the fastest.

Construct batteries that make electricity from fruits with this fun science fair project.

Science fair project that explores the natural process of limestone formation.

This science fair project idea demonstrates the process of land erosion.

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

This science fair project idea examines the reason boats are shaped and engineered.

This science fair project examines how seeds hitchhike on animals and clothing.