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/