This is an excellent website by the authors of the book in reference 1. This website also gives references to other paper airplane books written by the same authors. This site even gives print out instructions on how to make paper airplanes. This activity takes two-90 minute periods. Set the parameters for the competition - 1.
All flights are to begin at the same point.
Decide when time measurement begins. Decide how the distance is measured. Determine the boundary lines for the flights. There should be three flights for each group. The thrower must stand behind the start line to throw the plane.