The wayback machine
Sal talks about his early years in education, and when he first heard about the concept of mastery learning.
In mastery learning, students are not pushed ahead in lockstep, which can cause frustrating “Swiss-cheese” gaps. They learn at their own pace while teachers track student progress, identify gaps, and give one-on-one attention.
Mastery learning on Khan Academy is free. Khan Academy is a 501(c)(3) nonprofit organization that relies on support from people like you. Help make a difference in the lives of students by donating today: http://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc
