From site: 

This is a collection of images, thoughts, and resources about Ancient Greece…

While the entire site can be utilized as an educational resource, I thought some parts of it can be particularly usefull to professors and teachers.

Pictures of Ancient Greece  Here you will find pictures of major archaeological sites and museums of Greece. They are arranged in slide shows and thumbnail pages.

Timeline of Greek History and Culture  A chronology of Greece through ancient times which includes major periods of development, as well as major events in history.

The site has sections and illustrations for archeological sites, history and culture, maps, museums, art, and architecture.