Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Determine if gender affects the ability to identify different smells.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

This science fair project idea examines whether boys and girls differ in reflexes.

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.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.