Spanish translation of closed captioning and topic texts for Algebra 1 -- An Open Course was published in Summer 2012.
We have a Spanish translation of Algebra 1A and 1B, the English versions of which were created by the University of California. Additionally, we have Spanish translations of Calculus. These are available at http://www.HippoCampus.org. However, please note that this content will be retiring in June, 2014.