This is a flying paper plane that is quick and easy to build.  All you need is some card stock (from Dollar store), glue stick, and Super glue.  Assemble per the instructions, tune it to have a nice glide path inside, then go outside and throw it as hard as you can into the wind!  You will want about a baseball field size space.  You can print 4 per sheet of poster board.  that is enough for all of the kids to have dogfights and stunt contests.