Common Core lesson plans from the Smithsonian

Smithsonian Education offers educators lessons and resources aligned to state and Common Core standards for subjects like arts and design, science and technology, history and culture, and language arts. Through a great set of drop-down menus, you can select the standards you want (Common Core, or any state’s standards), the grades you’re interested in (K-12), and the subject area (there are 11 choices here). All totaled? There are more than 2,000 resources available. (posted November 26, 2012)
http://www.smithsonianeducation.org/educators/index.html