Sorry, can't answer specifically, but I had a group activity at Greenwich and we had to discuss a topic (how would we use the money raised during comic relief?) in groups of 4-5 and then write an essay on the conclusions we had drawn from it. We were watched to see how we were interacting, and whether everyone got a turn to speak or not. The essay was just to see if we could manage an academic style.
Good luck with everything,
KS x

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Kentish Spitfire
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"It's better to be thought a fool - rather than proved a fool!"