Each self-teaching unit is designed to teach a specific concept or skill. A unit consists of: (1) a stated performance or behavioral objective, (2) activities to enable the student to achieve the objective, and (3) a test to determine whether or not he has succeeded. This booklet begins with a description of the performance objective, and several sample objectives are presented. Section 2 contains suggestions on the selection and presentation of learning activities. In section 3, suggestions are made concerning ways in which self-teaching units can be used. Part 4 is devoted to the construction of a self-teaching unit. A self-instructional lesson is presented as a sample, and the booklet concludes with recommendations concerning the teacher's choice of learning medium and effective evaluation procedures. (PMP)