Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This project compares the strength of one, two, and three-ply toilet paper.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

Find out whether a longer airplane will fly farther or a wider paper airplane.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this project children practice the scientific method while playing with puffy paint.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

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

In this science fair project, students use the streak test to tell minerals apart from each other.

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

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.