In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project demonstrates the "power of conformity".

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

Research currently available fuel sources, and fuel manufacturing and processing techniques. Propose an alternative fuel source.

In this experiment, you experiment with laser jet toner, a magnetic fluid, as it moves, bubbles, and forms unique shapes.

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.

This science project has students study the idea of human beauty.

Show your teen how to make her own beeswax lip balm. It's one of the simplest do-it-yourself activities, and it's fun to make!

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

Investigate the kinds of memories we tend to store and the emotions we store with them. Determine if memories have a strong emotional component.

This science fair project idea explores the different properties & interactions of sugar molecules.

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

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.

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.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Test the combustion of different types of woods.

The goal of this science fair project is to investigate the effect of irradiation on the germination and growth of vegetables, such as the tomato plant.

This science fair project idea compares the mass and density of objects.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

In this science fair project caffeine will be extracted from Gunpowder Green Tea, illustrating the isolation of a naturally occurring product from a plant.