This compendium of interdisciplinary learning activities is designed to assist technology education instructors who are conducting an introductory secondary-level course in communication technology. The 12 activities, which are sequenced from introductory, low-cost activities to more advanced and more involved activities, deal with the following topics: the role of communications in expanding the world, conducting a neighborhood survey to count communications devices, constructing interference-free messages, fiber-optic simulation, assembly and use of a telegraph system, radio communication, satellite communication, basic principles of lasers, laser fiber-optic communication, principles of desktop publishing, principles of electronic mail, and reflection holography. Each activity is designed as an autonomous unit, and each includes an overview, equipment list, step-by-step description of the procedure, suggested evaluation techniques, and discussion of the activity's interdisciplinary aspects. Substantial bibliographies follow many of the activities. (MN)