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

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

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

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Plants and light seem to be good buddies, but how far does the friendship really go?

Test whether plants can grow without sunlight and water.

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

This science fair project idea explores how length affects the weight a bridge can hold.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

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

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 idea explores whether talking to a plant will help it grow.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

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

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project idea investigates how color affects temperature.

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

In this design challenge, your child will create a parachute for a small toy using typical household items.

Do you think heat can affect a plant's growth rate?

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

This science fair project idea explores substances that cause a bubble to last longer.

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

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!