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

This science fair project investigates which of two learning modes most commonly used in school, visual and auditory, is better for information retention.

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.

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?

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

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

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

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

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

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

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.

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

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

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

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

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

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Science fair project that determines which foods and drinks contain the highest amount of glucose.

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

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

This science fair project idea explores if objects dropped from a high distance will equal a greater impact force than the object dropped from a low distance.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

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

Are red apples really sweeter than green apples? The objective of this science fair project is to test the theory with quantitative evidence.

In this science fair experiment, middle school students evaluate whether tone of voice can influence our ability to remember a list of everyday objects.

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

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.