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.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science fair project examines how seeds hitchhike on animals and clothing.

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

Get a fun high school physics science fair project idea one of the states of matter called plasma and the applications of this unique coil.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

In this science fair project, students evaluate the alleged pain-relieving properties of amber.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

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

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.