LTEC Green 1 By ltecgreen1 Jan 1, 1937 David Merrill Wiki David Merrill Jun 6, 1980 MS DOS https://en.wikipedia.org/wiki/MS-DOS Jun 30, 1980 ADDIE instructional design model https://en.wikipedia.org/wiki/ADDIE_Model Jan 30, 1983 Apple LLE https://en.wikipedia.org/wiki/Apple_IIe Aug 23, 1985 obert Gagne (nine steps of instructional design) https://en.wikipedia.org/wiki/Robert_M._Gagn%C3% Nov 20, 1985 Windows 1.0 https://en.wikipedia.org/wiki/Windows_1.0 Jun 20, 1988 John Keller (ARCS model of instructional design) Jun 30, 1988 iMac https://en.wikipedia.org/wiki/IMac Jun 30, 1990 World Wide Web May 23, 2003 Second Life - 3D Virtual World http://secondlife.com/whatis/ Jun 30, 2004 Faceboo https://en.wikipedia.org/wiki/Facebook Feb 23, 2005 Youtube https://en.wikipedia.org/wiki/YouTube Mar 26, 2006 Twitter Jun 27, 2007 iPhone https://en.wikipedia.org/wiki/IPhone Oct 20, 2010 Instagram founded https://en.wikipedia.org/wiki/Instagram