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.

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

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

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

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 looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

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 science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

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

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

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

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

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

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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 investigates if fats add to the flavor of food.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science fair project idea compares biodiversity between drops of water.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

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

This science fair project idea determines if the color of light affects the growth of plants.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.