The 20th century has advanced in technology. We can learn so many things by using the technology. Technology is not only our gaming devices and video sources, but is also our teacher. Khan Academy is an application which involves technology, of course. It covers a massive amount of topics including K-12 math, Science, Economics and finance, Humanities, Talks and Interviews and Computer programming.
Khan academy has 4200+ videos. The videos can help a student, teacher, home-schooling, principal and even adults. Khan academy can even help you prepare for your upcoming exams. Any topics that you did not understand in class? Try search it up in Khan academy. I bet you will find a video that helps explain the topic.
This application is available for Apple, this is the link:
https://itunes.apple.com/ca/app/khan-academy/id469863705?mt=8
https://itunes.apple.com/ca/app/khan-academy/id469863705?mt=8
This is a slide show of khan academy:
Contributor: Angel