This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

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.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

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.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project teaches students the differences between fruits and vegetables.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

This science fair project idea experiments with spinning color wheels and optical illusions.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

This science fair project teaches students about wilting and browning of salad greens.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

This science fair project idea determines the most effective method of preserving food.

Construct batteries that make electricity from fruits with this fun science fair project.

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

In this project, a mnemonic is used to test how it increases memory.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.