ماقصة اكاديمية خان

Basem Medhat
منذ 12 سنة

The Khan Academy is a non-profit[2] educational organization, created in 2006 by American[3] educator Salman Khan, a graduate of MIT. With the stated mission of "providing a high quality education to anyone, anywhere", the website supplies a free online collection of more than 3,000 micro lectures via video tutorials stored on YouTube teaching mathematics, history, healthcare and medicine, finance, physics, chemistry, biology, astronomy, economics, cosmology, organic chemistry, American civics, art history, microeconomics and computer science.[4]
History
The founder of the organization, Salman Khan, was born and raised in New Orleans, Louisiana, United States.[5] After earning three degrees from the Massachusetts Institute of Technology (a BS in mathematics, a BS in electrical engineering and computer science, and an MS in electrical engineering and computer science), he pursued an MBA from Harvard Business School. In late 2004, Khan began tutoring his cousin Nadia in mathematics using Yahoo!'s Doodle notepad. When other relatives and friends sought similar help, he decided it would be more practical to distribute the tutorials on YouTube.[5][6] Their popularity there and the testimonials of appreciative students prompted Khan to quit his job in finance as a hedge fund analyst at Connective Capital Management in 2009, and focus on the tutorials (then released under the moniker "Khan Academy") full-time.[6] Bill Gates once said that "I'd say we've moved about 160 IQ points from the hedge fund category to the teaching-many-people-in-a-leveraged-way category. It was a good day his wife let him quit his job."[7]
The project is funded by donations. Khan Academy is a 501(c)(3) not-for-profit organization,[2] now with significant backing from the Bill & Melinda Gates Foundation and Google. Several people have made US$10,000 contributions; Ann and John Doerr gave $100,000; total revenue is about $150,000 in donations. Additionally, it also earned $2,000 a month from ads on the Web site in 2010, until Khan Academy ceased to accept advertising.[8] In 2010, Google announced it would give the Khan Academy $2 million for creating more courses and for translating the core library into the world’s most widely spoken languages, as part of their Project 10100.[9]
[edit] Technical format
Khan Academy heart disease.ogv
A Khan Academy video explaining heart disease
The Khan Academy started with Khan remotely tutoring one of his cousins interactively using Yahoo Doodle images. Based on feedback from his cousin, additional cousins began to take advantage of the interactive, remote tutoring. In order to make better use of his and their time, Khan transitioned to making YouTube video tutorials.[10] Drawings are now made with a Wacom tablet and the free natural drawing application SmoothDraw 3, and recorded with screen capture software from Camtasia Studio. Khan's audio narratives are recorded with a Samson C03U USB Multi-Pattern Condenser Microphone with a miniature desk tripod.[11]
While all videos continue to be hosted on Khan Academy's YouTube channel, they also are available through Khan Academy's own website, which also contains many other features such as progress tracking, practice exercises, and a variety of tools for teachers in public schools. Logging into the site requires a Google or a Facebook account.
Khan eschewed a format that would involve a person standing by a whiteboard, desiring instead to present the learning concepts as if "popping out of a darkened universe and into one's mind with a voice out of nowhere" in a way akin to sitting next to someone and working out a problem on a sheet of paper: "If you're watching a guy do a problem [while] thinking out loud, I think people find that more valuable and not as daunting."[12] Offline versions of the videos have been distributed by not-for-profit groups to rural areas in Asia, Latin America, and Africa.[5][13] While the current content is mainly concerned with pre-college mathematics and physics, Khan's long-term goal is to provide "tens of thousands of videos in pretty much every subject" and to create "the world's first free, world-class virtual school where anyone can learn anything."[5]
The Khan Academy also provides a web-based exercise system that generates problems for students based on skill level and performance. This software is available as open source under the New BSD license. [14][15] Khan believes his academy points an opportunity to overhaul the traditional classroom by using software to create tests, grade assignments, highlight the challenges of certain students, and encourage those doing well to help struggling classmates.[6] The tutorials are touted as helpful because, among other factors, they can be paused by students, while a classroom lecture cannot be.[16]
The success of his low-tech, conversational tutorials—Khan's face never appears, and viewers see only his unadorned step-by-step doodles and diagrams on an electronic blackboard—suggests an educational transformation that de-emphasizes classrooms, campus and administrative infrastructure, and even brand-name instructors.[17]