In this science fair project, young children notice and track changes in trees throughout the year.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

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.

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

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

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

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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

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

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

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

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

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.

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!

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

Discover whether a metal will expand under hot water.

How powerful is the reaction between baking soda and vinegar? Find out here!

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.