World Digital Library
This site is an excellent research base of primary source documents, accompanied by extensive visuals. The resource engages students and allows for a variety of learning styles as they can choose their own journey through the site, through maps, timelines, places, languages, etc. The majority of articles can also be computer narrated, in a variety of languages, which makes this useful for ELL classrooms, as well. The resource is well-organized with each article following a pattern, and very easy for students to use.