Fair Division Calculator

This site is concerned with the "fair" division of resources (fair in the sense of "envy-free"). "For instance, in dividing a desirable object, such as cakes, a 2-person algorithm has been known since antiquity, a 3-person algorithm since at least 1960, but an exact algorithm for achieving n-person envy-free cake divisions was not produced until Brams and Taylor's solution in 1995." This site features a calculator that demonstrates these algorithms. Part of the calculator may be quite practical for students, as one option is for "rent-partitioning (allocation of indivisible goods mediated by divisible payments)."

http://www.math.hmc.edu/~su/fairdivision/