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.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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

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

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Find out which kind of bubble wrap fares best when put in impact.

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

In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.

Kids make a paperclip perform an act of magnetic levitation and test how effective various materials are at magnetic shielding in this science fair project.

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

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Learn all about balance and motion as your child designs a corn maze!

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

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.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.