Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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

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 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.

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

This science fair experiment examines the relationship between gender, age, and smiling.

This science fair project idea sheds some "light" on which color of candles burn the longest.

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

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.

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?

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.

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

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

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

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

The objective of this science project is to determine the length of time for different seeds to germinate.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Science fair project that demonstrate how abrasions are formed on rocks in nature and the variations between types of rocks.

This basketball project explores the best way to make the perfect shot every time.

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this experiment you simulate radioactive decay in order to gain an understanding of the basics of half-life.

In this science fair project, students evaluate if the phases of the moon affect the way people feel.

This experiment explores whether caffeine improves athletic performance.