Facilitation: Using colored cards

I mentioned last class that we might be able to use a facilitation technique to make management of our participation a bit less intrusive. The technique is to use colored cards. I stopped off at the store yesterday and purchased a package of neon colored 3x5 cards.

How are they used? Well, check out this listing at wikipedia which details two ways to use the cards. I have not used the cards in the manner discussed in the discussion paragraph, but it sounds good; I have used the cards for decision making.

Anyway, food for thought.