Module. A set of learning activities (with objectives, prerequisites, pre-assessment, instructional activities, postassessment, and remediation) intended to facilitate the student's acquisition and demonstration of a particular competency (24:9). Protocol Materials. "Packaged" and thereby sharable or distributable learning experiences that lead to the mastery of a particular concept or set of related concepts by a given class of learners with a known degree of reliability, and with assurance that the concept that is measured has meaning in terms of "real life" referents (53:170). Training Materials. "Packaged" and thereby sharable or distributable learning experiences that have a known degree of reliability in getting a particular class or learner to execute a particular skill or set of related skills at a particular performance level in a particular instructionlearning context (53:170). Limitations of the Study Certain factors pertaining to the use of the module in an inservice situation may cause limitations to teachers. The subjects receiving treatment may not be familiar with the format of a module. Subjects advance at their own rate and