Khan Academy is a non-profit organization that aims to change education for the better by providing free world-class education for anyone, anywhere. This is the official YouTube channel in the Greek language. You can also visit our website at: http://en.khanacademy.org/ The Mathaino organization (www.mathaino.org), is the official representative of the program. If you would like to help in this effort, please email us at: kag@mataino.org or you can apply at http://www.khanacademy.org/contribute. The Mathaino organization is registered as a 501(c)(3) non-profit organization in the United States.