In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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 investigates the ability of different whitening toothpastes to whiten teeth.

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

Test whether plants can grow without sunlight and water.

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.

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

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 experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

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.

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

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

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 examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

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

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

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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

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

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.