This is a full year course in Calculus, written by and featuring Sal Khan. It is appropriate for high school or college students. It is divided into many units. Each unit consists of a number of 10-15 minute videos that can be consumed in one sitting. The videos concentrate on solving problems taken from an Open Source textbook. This course covers differential and integral calculus and goes as far as Green’s Theorem. Sal’s manner is approachable, interesting, and fun and is always pedagogically on-target.