References
https://larrycuban.wordpress.com/2012/04/01/evolution-of-classroom-technology-jeff-dunn/
http://edfn305spring.weebly.com/history-1600s-1800s.html
http://www.ehow.com/list_5969798_disadvantages-interactive-whiteboards.html
http://education.cu-portland.edu/blog/classroom-resources/is-the-interactive-whiteboard-a-good-replacement-for-the-classroom-blackboard/
http://www.easel.ly/
https://larrycuban.wordpress.com/2012/04/01/evolution-of-classroom-technology-jeff-dunn/
http://edfn305spring.weebly.com/history-1600s-1800s.html
http://www.ehow.com/list_5969798_disadvantages-interactive-whiteboards.html
http://education.cu-portland.edu/blog/classroom-resources/is-the-interactive-whiteboard-a-good-replacement-for-the-classroom-blackboard/
http://www.easel.ly/