This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

This science fair project idea investigates the relationship between memory and age.

In this science fair project, students test how objects float and sink in liquids of different densities.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

Kids learn about the color rendering index by finding the best lightning for makeup in this fun and original physics science fair project idea.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

This science fair project idea determines which flower lasts the longest.

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

Explore the effect of wind speed on the burning rate of a candle.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Word color association is just a fancy way to talk about the way we connect colors with words.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.