this is cool... a paper gyro!
Posted: Wed Aug 26, 2009 9:32 am
Are you often asked, "how does a gyro plane fly?" Here's a great way to demonstrate it with a quick and easy to make paper gyro!




Cut out a 6 1/2-inch-long by 1 1/2-inch-wide strip of paper. (Note: We found that using pinking shears made the gyrocopter fly better, but one cut out with ordinary scissors works well too.) Starting at the top, cut a 3-inch slit down through the middle of the strip to create a pair of wings.

from http://familyfun.go.com/arts-and-crafts ... play3.htmlFold down the wings in opposite directions from one another. Attach a paper clip to the bottom of the strip for weight. Now your child can drop the finished gyrocopter from an elevated spot, and it should spin to the ground.