This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Try this simple activity with your middle schooler to help him develop an understanding of why scientific classification systems exist and how they work.

Can playing video games trigger an adrenaline rush even though there's no real danger? In this cool experiment you'll learn all about how fight-or-flight works!

This experiment evaluates whether frequent texters have better finger dexterity compared to people that rarely use text messaging.

This high school science fair project investigates if small changes in your diet alter the pH of your saliva.

This experiment will explore if a randomly iterated algorithm will result in a pattern.

How is NASA able to launch something into orbit around the Earth? Learn about the relationship between gravity, speed, and orbit in space in this cool project!

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

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.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This easy at-home experiment is a great way to "see" science.

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

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.