This document discusses distance education and the history of associated technologies. It defines distance education as a system for delivering educational content to learners who are not physically present in a classroom, using an interactive combination of technologies. Early distance education relied on printed materials delivered by post. Through the 1970s-80s, computer-assisted training and coursework required using computers on-site. Modern distance education utilizes video conferencing, e-learning websites accessible via the Internet, and smartphone apps, allowing more flexible online learning. The number of students using distance education technologies has dramatically increased each year.