This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

This project explores if people more easily distinguish between faces of people of their own race or ethnicity compared to those of other races or ethnicities.

Determine whether cats have dominant paws. Observe which paw cat uses to reach for treats, feather, and string. Calculate percentage for two paws.

This science fair project idea explores which kinds of earplugs are the most effective.

Explore convex and concave objects and how they reflect light.

In this science fair experiment, high school students determine if all proteins denature at the same temperature.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

In this science fair project, students evaluate if astrological signs provide clues about people's personalities.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project idea explores whether white light can be separated into different colors.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

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

Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.

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

This science fair project idea investigates the difference in reaction times between boys and girls.

This science project helps students gain understanding of bioluminescence, the phenomenon that allows fireflies and glow worms to give off light.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

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

Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

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