Khan Academy - Wikipedia
https://en.wikipedia.org/wiki/Khan_Academy
OverviewHistoryFundingContentCriticismRecognitionExternal linksStarting in 2004, Salman "Sal" Khan began tutoring one of his cousins in mathematics on the Internet using a service called Yahoo! Doodle Images. After a while, Khan's other cousins began to use his tutoring service. Due to the demand, Khan decided to make his videos watchable on the Internet, so he published his content on YouTube. Later, he used a drawing application calle… Available in: Multiple languages Owner: Khan Academy, Inc.
Available in: Multiple languages
Owner: Khan Academy, Inc.
DA: 5 PA: 73 MOZ Rank: 45