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.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.

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

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

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.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

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.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

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

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.

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

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

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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

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?