This guide is designed to help teachers and supervisors in planning activities for observing Ethnic Heritage and Culture Weeks in the New York City Board of Education calendar. The first sections discuss goals and general heritage and culture themes, activities, and materials. The following sections each present suggestions for individual ethnic and culture weeks activities. Groups discussed in these sections are the Slavs, Puerto Ricans, Japanese, blacks, Chinese, Irish, Greeks, Pan Americans, Jews, Italians, and Scandinavians. Each section presents themes, background information, activities, lists of outstanding individuals from the group being discussed, a bibliography, and audiovisual aids, media resources, and organizations related to the group. A calendar of ethnic celebrations in New York City during 1980 and a questionnaire for evaluating this guide is appended. (Author/BE)