Explore the belief in astrology as a predictive system.

Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

Test whether spot magnets can help improve the symptoms of an injury.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Test the idea that people who wear glasses tend to be more educated. True or false?

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

In this science fair project, we will test how different kinds and shades of hair respond to bleach.

Administer IQ tests to volunteers. have one group practice typical IQ test problems. Then compare results of the two groups.

This experiment evaluates if the lighting in a room affects the speed at which test subjects perform mental tasks.

Find out which kind of bubble wrap fares best when put in impact.

This experiment evaluates if a noisy environment makes it harder for test subjects to perform tasks that require hand-eye coordination.

Multiple-choice test questions can be confusing. Here's a toolbox of tricks and strategies to help your teen become a multiple-choice master.

Test out various brands of permanent markers to see which one is least water soluble.

This science fair project idea studies whether eating a hearty breakfast before and exam will get them better test scores.

Test your friends to find out if you can replicate the placebo effect's incredible results.

This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

This experiment will test whether people are better auditory or visual learners and if there is a link between gender and either of these learning types.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

In this experiment you will use plastic and magnets to test your local soil composition.

In this science fair project, students evaluate test subjects to determine if certain personality traits are more common in frequent users of social media.

Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.