Khan academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. learn 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. learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more.. Because you know education is key to opportunity and every child has a right to learn. khan academy is world-class academic content. available in 190 countries. 100% free..
Sign up for khan academy’s free, 60-minute, self-paced mini-pd, and learn the nuts and bolts of how real teachers use khan academy in their classrooms.. Grammar on khan academy: grammar is the collection of rules and conventions that make languages go. this section is about standard american english, but there's something here for everyone.. Criticism and critique of khan academy. you can see more of my stuff at http://rationalexpressions.blogspot.com, or you can connect with me on twitter (@mpershan)..
