Useful sites for teaching

http://www.xtranormal.com/

http://prezi.com/

http://www.blogger.com/home?pli=1

http://www.slideshare.net/

http://ed.ted.com/

http://www.mentormob.com/

https://www.coursera.org/

http://www.openculture.com/

http://www.wikispaces.com/

https://www.diigo.com