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!

How to test for acids and bases? In this activity you and your child can make your own indicator from red cabbage!

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.

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

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.

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

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.

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.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

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

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

Test whether plants can grow without sunlight and water.

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.

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

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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.