Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This project explores the effectiveness of various common household ingredients in cleaning tarnished and oxidized coins.

Science fair project that examines the benefits of the plant enzyme: pectin methyl esterase (PME). Where is PME found in the plant? What does it do chemically?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Is there really such a thing as healthy gum? Students will learn what factors in chewing gum contribute to healthy teeth in this exciting science fair project.

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Plant sunflower seeds , measure height, calculate average height, compare size and weight of heads. Interpret findings in detailed report.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Explore the role of starches as thickening agents in food, and learn about the chemical properties of starch in the process.

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

This experiment investigates the relationship between the temperature of a candle and its burn rate.

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project investigates the affect of storage temperature on microwave popcorn.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

This science fair project evaluates if and how eating a large meal affects ability to perform mental tasks.

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

This experiment evaluates whether a personâs dominant hand is more sensitive than their non-dominant hand.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

The objective of this sociologically-inclined experiment is to evaluate whether kids' toy preferences are hardwired or develop as they grow.

This project explores whether music affects the growth and health of plants.

This classic children's game demonstrates how sound travels through air vs. through a solid.