Information technologies used in the workplace, such as videoconferencing and the Internet, have become available to educational institutions as well. When used for distance learning, these technologies can make education more widely available by breaking geographic and time boundaries. But like television and computing before it, distance learning may demand new instructional approaches. Taking television as an example, teachers originally were expected to produce their own television programs. That didn't happen because television production turned out to require several hundred hours of work for each hour of class material. No teacher has that time,