The document outlines the evolution of educational technology in schools over the past 114 years, from the one-room schoolhouses of the early 1900s to widespread internet access and mobile devices today. Some key developments include the introduction of radios and films in the 1920s-1930s, overhead projectors and televisions in the 1930s-1950s, the development of programming languages and handheld calculators in the 1960s-1970s, the introduction of personal computers and the internet in schools in the 1980s-1990s, and the ubiquitous use of tablets, wireless devices, and online learning today.