Make sourdough bread...and learn some colonial history and modern science in the process!

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

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

This science fair project idea explores whether color affects a person's emotional state.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

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

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

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Determine if gender affects the ability to identify different smells.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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

In honor of Black History Month, this activity encourages your child to focus on African American inventors, and do a little inventing of his own.

This project examines whether people's taste perception is influenced by what they see.

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