This is a real incident from a study I just completed that compared teacher use of technology with and without wireless projection systems. I found that these systems changed the spatial arrangements in the classroom as well as the reach and frequency of technology use.
Thanks to Sally Galman, who took my very crude cartoon and made it into something fabulous. See http://blogs.umass.edu/sallyg/ for more information on Sally and her wonderful work including her research methodology books (in cartoon format).