Stan Wagon, when he was an active professor in the Mathematics and Computer Science Department at Macalester College, posed a mathematics problem to his students every week. This Problem of the Week tradition was started in 1968 by the late Professor Joe Konhauser. Professor Wagon took over in 1993. Since the problems are meant to be accessible to first-year college students, very little background is needed to understand or solve them. These problems are also sent out by electronic mail. To join the mailing list, sign up below. Stan is now retired from Macalester, but still sends out problems and solutions, though not on a weekly basis.