EngageCSEdu

This site, from the National Center for Women and Information Technology, offers a collection educational materials aimed at teachers of undergraduate computer science courses. The course materials on the site are open use and contributed by faculty from across the U.S., and can be searched by course level, material type, programming language, and more. The collection is intended to help educators provide a great introductory CS experience in order to retain "women and other underrepresented groups in undergraduate CS education." Visitors are asked to complete a short registration process in order to access certain materials.