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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!

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

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.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

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.”

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.

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

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

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 science fair project idea investigates the hardness property of minerals.

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.

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

Test whether plants can grow without sunlight and water.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Test your friends to find out if you can replicate the placebo effect's incredible results.

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

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

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.

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

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

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

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.

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

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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

This science experiment has students test whether a snail moves faster on concrete or dirt.