Predictive task using 'Lights Out' from
classtools.net. Turn the 'lights out' before pupils see the image.
Move around the Moscow area with the light on a small setting. Ask
pupils to say what they think the red dots represent. Gradually increase
the size of the Light and the area you cover. This should bring home
the extent of the Gulag network once they realise (or are told) what
the red dots represent.