S.O.S. Mathematics

Providing reference and review material on many math topics, this site also features practice exams, a message board, reference tables, and a list of recommended books. Over 2,500 pages give short lessons on algebra, trigonometry, calculus, and matrix algebra. The explanations are complete and extensive, flow well from one to the next, and include plenty of sample exercises. This resource is part of the Teaching Quantitative Skills in the Geosciences collection. http://serc.carleton.edu/quantskills/ Educational levels: High school, Undergraduate lower division, Undergraduate upper division