"Set" Card Game

I came across this card game called "Set" which is used for cooperative learning in class. It is a simple card game where a group of students try to identify sets of cards from a deck with different attributes, such as shape and color. A "set" of cards is one where either each attributes is the same or different.

Try this Flash tutorial to understand the mechanics of the game.
http://www.setgame.com/set/index.html

There is alot of potential in this game for teaching and learning in the following areas:

Permutation and Combination
Eg: What is the total number of sets that can be formed from the deck?
Set Theory
Eg: If A is the set of red cards and B is the set of diamond shaped cards, what does the set A union B mean?
Probability
Eg: What is the probability that the game will end with 3 cards?
Problem Solving
Eg: What is the maximum number of cards that can be picked before a set must be found?

More information can be found in the following two URLs:
http://www.setgame.com/set/article_nctm.htm
http://www.setgame.com/set/index.html