This instructional package, one of four designed for regular vocational students, focuses on the vocational area of medical assistant. Contained in this document are twenty-six learning modules organized into three units: language; receptioning; and asepsis. Each module includes these elements: a performance objective page telling what will be learned, what materials will be needed, and how the student will be evaluated; information pages (not always included) which provide information needed to perform the activity; and job step pages which detail steps (visuals included) necessary to do the tasks. (This document and related documents CE 017 570, CE 017 571, and CE 017 572 are one of two sets of learning modules on medical assistant written in formats designed for regular vocational and visually impaired students. The modules are part of a total set which includes over 1,300 modules written in a variety of formats on building maintenance, dietetic assistant, small engine repair, medical assistant, and graphics.) (JH)