References:
Khan Academy,. (2015). Khan Academy. Retrieved 25 October 2015, from http://khanacademy.org
Mentimeter.com,. (2015). Mentimeter - Turn opinions into tangible data, in real-time. Retrieved 25 October 2015, from http://mentimeter.com
Google.ca,. (2015). Google. Retrieved 25 October 2015, from http://google.ca