The objective of this book is to provide a comprehensive introduction to telecommunications and their applications in teaching and learning. It contains up-to-date information about telecommunications, including the latest hardware and software. It discusses the most recent developments in computer networking and how to apply them creatively in the classroom and the school. There is an in-depth discussion of teleconferencing as a way to bring cost-effective instructional material to students. The book also explores distance learning and how it can be expanded to include the home and office as well as the school. There is a detailed presentation on how to ensure computer security in schools to protect records, grades, and other sensitive data. Practical applications and examples are given where appropriate. A directory of on-line educational databases, a lengthy glossary, and an index are included.