From McDougal Littell, this is a CD for Win or Mac. Primary Source Explorer---An Interactive Journey through America's Documents. Students complete projects based on primary source documents. After choosing a role to play such as an ad executive or journalist, the student then turns to the CD which provides resources, research material, and project making tools in a "virtual office" with pictures, movies, audio clips, and text. Comes with user's guide. New, never been opened.