The use of matrix multiplication in the theory of Markov chains is demonstrated without directly discussing any probability theory. The technique that is developed is applied to ratio and mixture problems that are in changing states. (JP)

A game is presented in which computation by a stepping-stone method is used to solve minimax problems. An additional application of this game is used for finding the Pearson correlation coefficient by non-parametric techniques. The game provides considerable computational practice as well as a motivational problem solving situation. (JP)

The last 13 of 32 exercises of a course designed to give a wide range of skills in deductive, inductive, and indirect methods of proof in geometry are presented. (MP)