Khan Academy

Starting in 2004,[7] Salman "Sal" Khan began tutoring one of his cousins in mathematics on the Internet using a service called Yahoo!

Due to the demand, Khan decided to make his videos watchable on the Internet, so he published his content on YouTube.

[16] In 2013, Carlos Slim from the Luis Alcazar Foundation in Mexico, made a donation for creating Spanish versions of videos.

The website is meant to be used as a supplement to the videos, because it includes other features such as progress tracking, practice exercises,[21] and teaching tools.

Non-profit groups have distributed offline versions of the videos to rural areas in Asia, Latin America, and Africa.

The Khan Academy website also hosts content from educational YouTube channels and organizations such as Crash Course and the Museum of Modern Art.

[34] Khanmigo is a chatbot powered by GPT-4 technology, designed to assist users with mathematics, science, humanities, and coding inquiries, as well as aiding in learning these subjects.

[38][39] The Khan Academy platform is fully available in English (en), Bangla (bn), Bulgarian (bg), Chinese (zh), French (fr), German (de), Georgian (ka), Norwegian (nb), Polish (pl) Portuguese (pt), Spanish (es), Serbian (sr), Turkish (tr) and Uzbek (uz), and partially[40] available in 28 other languages.

It is used by children aged two to eight to learn basic skills (primarily mathematics and language arts) before progressing to grade school.

[47] In response to these criticisms, the organization has corrected errors in its videos, expanded its faculty, and formed a network of over 200 content experts.

"[12] Khan Academy positions itself as a supplement to in-class learning, with the ability to improve the effectiveness of teachers by freeing them from traditional lectures and giving them more time to tend to individual students' needs.

Sal Khan presenting during TED 2011
The narrator writes to an electronic blackboard during a recorded lecture.