This booklet was developed to provide helpful suggestions for planetarium directors, teachers, and school supervisors. The booklet is divided into seven different units of study. Each unit is similar in design and format, beginning with an overview of the topic followed by a description of planetarium activities which the authors successfully employed in their classes during the 1963-64 school year. Each unit also includes related vocabulary, suggested questions and activities for pupils, mention of pioneers in science, and lists of selected books and audiovisual aids. A brief description of the Bridgeport Planetarium is included in order to give the potential user a better appreciation of possibilities in his own locale. Teachers who do not have ready access to planetariums may also find this booklet useful for its suggestions relative to resources and activities. (BC)