paper airplanes

One of my favorite parts of choice time is seeing what the children discover in the classroom. Sometimes it's a new puzzle, sometimes a new art medium and sometimes it's just something neat to make out of paper! Today someone started a class wide interest in paper airplanes. We started by a few kids trying out different airplane models. In the afternoon, we used the stage as a safe place to fly them. When we had had two trials, some children decided they wanted to modify their plane design to see if they could make it fly further. Some added staples, others added tape and some chose to cut off parts of their planes. How did those modifications affect the flight?