WEBLearn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
WEBKhan Academy er en nonprofit organisation med en mission om at give en gratis, verdensklasse uddannelse for alle, overalt i verden. Lær gratis om matematik, kunst, computerprogrammering, økonomi, fysik, kemi, biologi, medicin, finans, …