Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

This science fair project idea demonstrates sonar mapping of the ocean floor.

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

Examine whether males or females are more likely to have a higher center of gravity.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

This experiment tests which gender is better at catching how a magician performs his tricks.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This science fair project idea demonstrates how our fingers prune when in water.

This science fair project idea explores whether a person's ability to see under very dim lighting conditions diminishes with age.

Science fair project that tests how well various sunscreens protect skin from the sunâs ultraviolet radiation by measuring their effect on sun-sensitive paper.

This science fair project idea tests whether tall people have the ability to swim faster than people of average and shorter heights.

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

This science fair project determines whether the types of plants growing in a Pacific Northwest rain forest environment are influenced by the soil acidity.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

The objective of this science fair project idea is to explore which brands of "anti-fade" shampoos work the best to keep hair color looking fresh.

This science fair project idea examines which type of insulation holds in the most heat.