This module on medical terminology (root words) is one of 17 modules designed for individualized instruction in health occupations education programs at both the secondary and postsecondary levels. This module consists of an introduction to root words, a list of resources needed, procedures for using the module, a list of terminology used in the module series, and three learning experiences. Each learning experience contains an overview, an objective (e.g., given information about the root words commonly used in medical terminology, identify the root word with its proper meaning), and two or three activities (e.g., study the list of root words and their meanings; practice writing the root word, meaning of the root word, and an example-medical term). Information sheets (such as lists of root words, and sample puzzles are generally provided for each activity. To provide feedback to students, a self-check with model answers is given for the first two learning experiences; a student performance assessment form for use by the instructor follows the third learning experience and completes the module. (KC)