Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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.