"You have another ten minutes or so to finish up your questions, whether you are working alone or in groups." Ethan informed the class, having been listening to the various discussion with interest. "If you have finished your questions catch up on your notes or continue discussing your chosen ten year period quietly." Ethan flicked his wand to turn up the volume of the gramophone again.

ooc: I'll continue the class in about... *does maths*... 15 hours or so.