This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

Study history of aerodynamics of arrow design to create a perfect arrow. Test arrows by shooting at an archery target.

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.

Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.

Free science fair project idea examining how different types of water affect plant germination and growth.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

This science fair project investigates why the number of visible stars changes from place to place.

Research fruits and their ripening stages, follow and document the different stages. Analyze what causes fruit to continue ripening after being picked.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

Find out whether matte or shiny nail polish lasts longer.

This experiment will explore whether adding different substances to a gel affects its strength.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

The goal of this science fair project is to demonstrate current methods of detecting counterfeit money, in particular counterfeit detection pens.

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

Devise list of randomly chosen words, test how many words volunteers can remember. Compare results of adults and children. Which have better memories?

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

This science fair project idea determines the most effective method of preserving food.

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

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.