Nine pamphlets comprise this college-level curriculum support package about 1970 census data. "Teacher's Guide: Approaches to Census Data" describes unit objectives, discusses student materials and other publications the teacher may need, and suggests class exercises. A workbook for students gives an overview of 1970 census subject matter, geography, and data products; mentions related current data sources; provides guidance in finding particular data; and contains exercises to involve students in the use of census publications. Two case studies present a site-location problem in which students must refer to small-area data, and a problem of group migration requiring analysis of state and regional data. Focusing on social welfare applications of data, "Census Data for Community Action" studies concerns such as relocation projects and voter registration. As a sample of state summary reports, a profile of Maryland census data is provided. Three reports, called data access descriptions, provide references to census geographic products helpful in analysis of small-area data; discussion of individual items on the 1970 census questionnaire; and a bibliography of printed reports issued by the Bureau of the Census as a result of the 1970 census. All materials are available from the Bureau of the Census. (AV)