Our special thanks to Richard Askey, Professor of Mathematics (University of Wisconsin, Madison) and Madge Goldman, President (Gabriella and Paul Rosenbaum Foundation), for their indispensable advice and suggestions in the production of the Primary Mathematics Standards Edition.    

Primary Mathematics Standards Edition has been approved for school adoption by the California State Board of Education.   Schools - please contact school@singaporemath.com for more infomation.   

We started publishing Home Instructor Guides for Primary Mathematics Standards Edition in 2008.  Home Guides 1A, 1B, 2A, 2B, 3A, 3B, 4A and 4B are now available.  5A will be available in the spring of 2010.   

Please note that the Primary Mathematics Standards Edition textbooks, workbooks, guides, and tests cannot be used interchangeably with the Primary Mathematics U.S. Edition textbooks, workbooks, and guides.