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

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

This experiment examines whether social orientation (extroversion or introversion) is correlated with memory.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

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

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This experiment investigates whether smell can be used to enhance test subjects' memories.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Test of the effect of exercise on rote memory. Prepare a single list of 40 randomly chosen words. Have volunteers recall as many words as possible.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This experiment uses personality assessments to evaluate if certain personality traits are more common in people with unusual first names.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Determine the effect of reading aloud on memory skills. Prepare a list of randomly chosen words, ask volunteers to recall as many as possible from the list.

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.