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.

Determine if gender affects the ability to identify different smells.

This experiment tests which gender is better at catching how a magician performs his tricks.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This project determines what category of person is most likely to be ticklish.

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

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

This science project allows students to study the psychology of happiness.

Turn printed family photos into a sturdy "flash card" game to help your child learn the names and faces of near and distant relatives.

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

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.