This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Get a cool middle school chemistry project idea on how to determine whether a physical or a chemical change has taken place.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

This science project idea's objective is to understand how TV mysteries change expectations of mystery stories.

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

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

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

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

This social science experiment assesses whether the timing of peak mental performance shifts from afternoon to morning as we age.

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.

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

This science fair project idea explores how water and ice can change the form of rocks.

This science fair project idea uses the process of chemical weathering to change a mineral.

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

Science fair project that determines how we can change potential energy into kinetic energy.

In this project, you will observe and record changes in sunspots over two weeks.

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

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.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

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

Research basic components of vacuum cleaners, consult vacuum cleaner manufacturers for advice. Design vacuum with attachments that change automatically.

This project determines how much the rebound rates of tennis balls change after ten games.

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 determines if the size of the parachute will change the rate at which an object falls.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

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

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.