This classic children's game demonstrates how sound travels through air vs. through a solid.

The objective of this science fair project it to determine whether adding ethanol alcohol to gasoline slows the run time of a motor.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

In this experiment, you will evaluate whether or not a diet that is supplemented with "brain-enhancing" foods can help improve memory.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea explores if people with cool skin tones prefer cool colors and people with warm skin tones prefer warm colors.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Evaluate gender differences in processing visual information.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

This experiment evaluates whether a person's eye color affects their ability to identify colors in low light.

Can cells be frozen? This science fair project provides information to answer this question.

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.

This science fair project idea addresses tempo, and whether faster or slower music works better as a study aid.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

This experiment evaluates if personality influences whether a person prefers dogs or cats.

Discover whether a metal will expand under hot water.

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.

Will male or female hair grow faster? Find out in this science fair project idea!

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

This science fair project idea measures physical dexterity as a function of temperature.