Sage Tutorial WwwSagemathOrg Author:David Joyner, William Stein This is a tutorial explaining how to use the free and open source mathematical software package Sage (version 3.0). Sage and this can be downloaded free from the website: http://www.sagemath.org/. Copyright: (c) 2008 Creative Commons Attribution-ShareAlike 3.0. Royalties go directly to the Sage Foundation.