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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.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

This project researches whether the type of land use affects the water quality of Queenstown Creek.

Start your toy engines -- this is going to be a fast and friction-filled race!

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

Science fair project that demonstrates the different phases of the moon by physically representing them with construction paper and a shoebox

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Free science fair project idea that measures change in flexibility with age, using a variety of flexibility tests like Sit & Reach.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

In this science fair project, young children notice and track changes in trees throughout the year.

Looking for a project on fossils? Check out this fun science fair project idea to understand the process of coal formation and fossils part in that formation.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea determines exactly how much of an effect road grade has upon a cyclistâs speed.

Science fair project that compares tree leaf size and shape based on the leaf's position in the tree. Is their is a noticeable difference between high and low?

This science fair project idea examines which is the best way to get rid of water stains (stains caused by just water) on fabric.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

This experiment investigates whether the psychological phenomenon of the halo effect can be used to explain people's perceptions of others.

This project will examine the relationship between wind velocity and direction and the distance a baseball travels.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

This project examines what types of objects burn and which burn faster and cleaner.

This cool middle school science fair project idea helps students explore the role phototropism plays in the growth of green plants.

Which sunscreen is most effective at blocking the sun's harmful UV rays? Test the SPF of various sunblock brands in this cool science project!

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.