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.

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

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

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

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

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.