13 reactions | Sal Khan explains how Khan Academy is built on the notion of mastery learning. There is a great deal of research on tutoring. “If you can get one-on-one tutoring you can make a huge difference,” he says. “There is a beautiful irony here that technology can actually be used to unlock human-to-human connection.” CHM has awarded Sal the 2021 Patrick J. McGovern Tech for Humanity Prize. #TechForHumanity | Computer History Museum | Facebook