You can ponder the effect of small changes in the rules, for example. Suppose each person gives half of his or her candy to the person on the right and half to the person on the left. Over and Over Again . Tanton, J. 1999. A half-dozen mathematical activities to try with friends.
Comments are welcome.
He is the author of The Mathematical Tourist, Islands of Truth, Newton's Clock, Fatal Defect, and The Jungles of Randomness. For children ages 10 and up.