This site has different lessons on various topics. This link is directly to the civics database portions. Lessons are correlated to standards and have supporting materials.
This is a database of images that can be used by science teachers in lectures/presentations. It contains organismal biology, human biology, and histology. All the images in one place!
Learn NC is a website that is helpful for North Carolina teachers because it lists the standards and has links to resources including a lesson plan database.
This is a database for multiple ancient civilizations. It covers societies from every continent and is accessible in an easy to use site. Anyone can view this site and find information on almost every society.