This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

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

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

This science fair project idea explores whether color affects a person's emotional state.

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 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.

The objective of this science project is to determine the length of time for different seeds to germinate.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

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.

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Cleaning can be a chore, but not with this sudsy experiment!

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

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.