In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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.

This science fair project idea investigates how color affects temperature.

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

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

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

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

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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

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

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

Test whether plants can grow without sunlight and water.

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

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

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

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

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

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

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.

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 project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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