Educational technology has evolved over the past few centuries from primarily chalkboards and books to increasingly incorporate modern devices. In the 18th-19th centuries, chalkboards and books were the main teaching tools. In the early 20th century, films, photographs and slides began to be used to supplement teaching. Radio stations licensed for education launched in the 1920s. Television was introduced for instructional purposes in the 1950s and experimental long-distance TV lessons were transmitted. Computers began being used for education in the 1970s and Internet connectivity reached 97% of schools by the late 1990s, allowing access to online resources.

1. Educational Technology A Brief Historical Review Educational technology : The use of technology in educational settings

2. 1780 – 1900’s Teacher / manager model. Main teaching instruments: blackboard and chalk.

3. 1900 – 1910’s School museums lent materials to teachers for use in classrooms Films, photographs, charts Stereographic slides

4. 1910- 1920’s Silent films for instructional use were rented by schools.

5. 1920- 1950’s Radio educational stations began to be licensed for instructional purposes. Peak activity radio use from 1925 until 1940.

6. 1950- 1970’s Instructional television. Airplanes transmitted televised lessons over a six-state area.

7. 1970 – 1990’s Computer era begins. Computers are used for instructional purposes in the USA.

8. 1990- 2000’s Computers and internet. CD-ROM Internet connections in 97 percent of schools.

9. 2000 – 2010 CD-Rom’s DVD’s Intranet and internet Distance education courses Access to learning resources within and beyond schools.

10. Sources http://en.wikipedia.org/wiki/Educational_technology http://www.csulb.edu/~murdock/histofcs.html http://www.docstoc.com/docs/426986/History-of-Educational-Technology http://bethrichards1.wordpress.com http:// www.underconsideration.com / wordit / tag / blackboard http://scrapetv.com/ http://www.wosu.org/archive/tv50/index.php http://www.answers.com/topic/school-technology-in-education http://blog.makezine.com/archive/2006/07/sparkbench_old_radio_rest.html http://freepages.genealogy.rootsweb.ancestry.com/~nemahaks/unkn/unkn0094.html http://www.yourdictionary.com/computer/quadra http://onlinetrziste.com/2010/03/02/ http://www.globalpost.com/dispatch/education/100427/computers-classroom-internet http://www.refresheverything.com/blog/author/ldwyer/ http://www.old-computers.com/history/detail.asp?n=39&t=3