Group annotations on this page
vtaylor on 2012-05-12"K-12math.info is a bibliographic information system used by elementary and secondary school mathematics material developers, teacher trainers, resource professionals and home schooling parents.
K-12math.info uses a list of 1,000 of the most common terms that appear in elementary and secondary school student editions of mathematics textbooks. It tracks which textbook contain which terms, on what page (for OER materials a link to where the term can be found), for what grade level, and how the term is being used. Information has been collected since the early 1970’s to the present Open Education Resource (OER) textbooks series. And displayed in a spreadsheet format. "