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

Explore if planting seeds in a certain direction will affect how fast it germinates.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea examines which type of insulation holds in the most heat.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

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

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

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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!