Abstract: A time-management teaching device includes a clock-like arrangement which moves an indicator at a rate of one revolution per hour, a number of interchangeable annular elements adapted to be deployed around the clock-like arrangement, and a set of activity markers releasably attachable to any of the annular elements Each of the activity markers indicates a corresponding activity to be performed by a user. The activity markers attached to each of the interchangeable annular elements indicate, by association with the time progression indicator arrangement, a corresponding progression of activities to be performed during a plurality of periods of up to one hour.