The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

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.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

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

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

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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.

In this activity, your child will be challenged to make a tower using paper cups.

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

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

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

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

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.

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

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.