This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

This science fair project idea explores whether the types and brands of faucet filters are relevant to their performance.

This experiment will explore the possibility of creating an infinite object by hand.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

In this experiment you will evaluate whether praise improves athletic performance.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Explore concepts in current and coltage with these Van de Graaff generator experiments.

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

Can cells be frozen? This science fair project provides information to answer this question.

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

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.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

Discover whether a metal will expand under hot water.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

This experiment investigates if stress alters body temperature.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

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

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

In this science fair project, students test how objects float and sink in liquids of different densities.

Evaluate gender differences in processing visual information.

Learn whether writing things down really makes things easier to remember.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.