The use of metrics in home economics taught at all levels is presented in this teacher's guide. Following an introduction on the history of the metric system and future use in the United States, section 2 presents information on bringing metrics into the classroom: changes in home economics (food and nutrition, clothing and textiles, and housing, furnishings, and equipment) in relation to an adoption of the metric system; princples and guidelines for teaching metrics; a suggested timeline for incorporating metrics into all schools in New York State; and sample guidelines for schools developing a metric policy. Section 3 contains transparency masters and a narrative script for presenting general background on the metric system to consumer or homemaking classes at junior high through adult levels. Section 4 provides hands-on metric learning activities. Metric units in food and clothing are discussed in the concluding section. Tables of metric units for measuring food and a discussion of the kinds of utensils are followed by twelve metric recipes. Metric clothing sizes and a sample pattern envelope are illustrated. The appendix includes a glossary of terms and a list of references: books, instructional materials, and articles. (JH)