This manual for workshop leaders offers guidelines for planning and conducting a teachers' workshop in assessing the tasks students are asked to perform. The focus is on individual tasks in self-help or auto-instructional materials, although closer examination of such tasks will suggest their value for adaptation and inclusion in standard teaching practices. During the workshop, participants learn to describe the type of task individual items involve; to determine whether the skill is being introduced, clarified, expanded, or practiced; to recognize the assumptions the task makes about the student; and to estimate the value of the task in generating new insight or further learning. Objectives for the workshop, suggested agenda, a trouble-shooter's guide, a discussion guide, examples of tasks and assessments, and a task-assessment form are included. (AA)