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

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

What happens when "coffee-addicts" miss coffee for 1 day? Find out in this science fair project idea!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

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

Check out this cool science fair project on identifying rocks and minerals for kids.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

This science experiment tests if dog saliva can really help heal wounds.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

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

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.

In this design challenge, your child will make a bottle rocket using typical household items.

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

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Find out whether optical mice are useful on all surfaces or if there are drawbacks to this supposedly superior solution to the traditional roller-ball mouse.

This science fair project idea determines what household items are good conductors of electricity.