Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

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!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

The project investigates how water and movement affects erosion.

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

Get a fun science fair project idea for high school students on the basic and current information on the process of propulsion.

Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Is it a square or a circle? See if you can trick your friends with this zany science project!

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?

This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Cleaning can be a chore, but not with this sudsy experiment!

How can Hooke's law explain how springs work? Learn about how Hooke's law is at work when you exert force on a spring in this cool science project.

This project explores ways to prevent static electrical shocks.

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

Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.

Learn about the growing app design field by designing a new or improved app for smartphones.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

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

This project examines whether sugar substitutes are as sweet as real sugar.