When we have a table of values of a function, we can use it to find a Riemann sum approximation of that function.
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AP Calculus AB on Khan Academy: Bill Scott uses Khan Academy to teach AP Calculus at Phillips Academy in Andover, Massachusetts, and heÕs part of the teaching team that helped develop Khan AcademyÕs AP lessons. Phillips Academy was one of the first schools to teach AP nearly 60 years ago.
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Khan Academy Ed Talks with Professor Thomas Guskey, PhD