NSDL.org is an online science library with links to high quality science, technology, engineering, and math resources for K-12 teachers, faculty, librarians, students and informal learners. Funded by the National Science Foundation. (via Marcia Mardis, SLIS, FSU)
"The purpose of this document is to provide an overview of the Common Core Standards for Literacy in History/Social Studies, Science, and Technical Subjects... This document provides hints and tips for the part of the Common Core Standards that were written specifically for the content areas."