Distance Calculus @ Roger Williams University in Providence, RI, USA offers accredited online Calculus I, Calculus II, Multivariable Calculus, Differential Equations, Linear Algebra, Probability Theory, Precalculus, and Statistics courses for university academic credit using a Mastery Learning pedagogy, centering on the usage of both computer algebra/reform curriculum and manual computation skills, in an asynchronous / self-paced course providing up to 1 year to finish a course, based upon revolving on-demand enrollment.