This monograph was designed primarily to develop awareness of the benefits of using calculators to teach mathematics in grades K-8 and to provide teachers with some specific teaching ideas. The first section, on the rationale for using calculators, presents position statements from various groups and answers some questions about the use of calculators. The second section provides a brief research summary. In the third section, an in-service model outlines activities to use with teachers. Strategies and activities for teachers to use, gleaned from a variety of sources, are included in the fourth section. Following this are suggestions for curriculum change, followed by resources. Finally, several readings for administrators are included. (MNS)