This project compares the strength of one, two, and three-ply toilet paper.

In this project, waves of vibrations are experimented with using water in glasses.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Find out whether a longer airplane will fly farther or a wider paper airplane.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

This science fair project idea explores whether talking to a plant will help it grow.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this project students experiment with making music using only glasses of water.

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

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

In this experiment we will be determining whether birds prefer certain colors of seed.