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

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

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

Find out whether putting something on top of a plant will inhibit its growth.

Do different types of oil mix or stack? Find out in this science fair project idea!

Find out whether packaged seeds actually do expire in this new science fair project idea.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science project allows students to study the psychology of happiness.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea explores which fruit molds the fastest.

Determine if gender affects the ability to identify different smells.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Do you think heat can affect a plant's growth rate?

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

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

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

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

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

This science fair project idea explores the different properties of matter.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

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

Examine the effect of pressure on carbonation in soda.