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

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 project students experiment with making music using only glasses of water.

In this experiment we will be determining whether birds prefer certain colors of seed.

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

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

This science fair project idea explores whether talking to a plant will help it grow.

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea examines which type of insulation holds in the most heat.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this project children practice the scientific method while playing with puffy paint.

This project examines whether people's taste perception is influenced by what they see.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

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

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.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.