Eight modules for an in-service course on metric education for elementary teachers are included in this document. The modules are on an introduction to the metric system, length and basic prefixes, volume, mass, temperature, relationships within the metric system, and metric and English system relationships. The eighth one is on developing a teaching plan and is designed to be completed in participants' own schools. Each module includes objectives, informational materials, suggested activities, and evaluation measures. References, equipment lists, additional activities, and concise summaries of metric measures are appended. (MS)