What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This science experiment tests if dog saliva can really help heal wounds.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this science fair project, students create their own miniature salt flats at home.

This science fair project teaches students about wilting and browning of salad greens.

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.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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

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

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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.

The goal of this project is to create an exciting topographical map out of dough.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

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

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.