This book's overall purpose is to improve the instruction process through appropriate integration of technology via the Internet. It is designed to aid K-12 teachers who are interested in tapping the Internet for instructional purposes by demystifying the technology and providing relevant, interdisciplinary, and easy-to-implement activities for the classroom. Opening chapters contain information on the benefits of the Internet, getting connected, and navigating in cyberspace. Subsequent sections highlight Internet activities for students involving communications and research and Internet "treasures" for teachers from listservs to online experts. The final four chapters focus on subject-specific Internet classroom activities related to science and mathematics, language arts, social studies and geography, and music and art. Reproducible masters of lesson plans activities and resources and handouts are provided, along with lists of electronic mail exchanges, online resources, and world wide web addresses. (Includes 32 figures and 7 tables.) (BEW)