|Mystery machine. Image from Wikimedia Commons.|
Until the early 1990s (in some schools and Extension offices even later), the mimeograph machine was the tool of choice to make copies of materials for classes and newsletters. An invention of Thomas A. Edison, the mimeograph machine made printed copies using typed stencil. My, how things have changed over the past 25 years!
Both the tools we use to create our learning resources and the way we carry out our work has changed.