Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

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

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

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

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

Construct and experiment with a periscope using reflected light rays to gather an image.

Determine how effective animal camouflage is by simulating it in an indoor and outdoor setting.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

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

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Are you ready to pilot your own airplane? Well, then take to the skies with this high-flying project!

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

The objective of this project is to evaluate whether a top will spin at different rates during different phases of the moon.

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

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.