Seems to me that this was a misleading, confusing, and even irresponsible question to pose to a six year old, particularly one with learning difficulties. To ask, 'where does the light go?' when you turn off a lamp implies that the light does indeed go somewhere, when in fact, it doesn't go anywhere at all. It's quite simply the wrong question to ask - there's no sense in which the light itself does anything at all. You turn off the lamp and you remove the only source of light in the room. End of story.
Yvonne
