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

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

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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

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

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

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

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

This science fair project idea investigates how color affects temperature.

This project tests the hypothesis that dark colors absorb more heat than light colors.

The project determines which type of birds prefer which type of birdseed.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

The project investigates how friction affects motion by using different surface textures.

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

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

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

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.