The Smithsonian Institution's National Museum of American History provides this online exhibit, a look at one of the more unsavory aspects of American history. The exhibit can be viewed via a floor plan or a series of navigational toolbars at the bottom of the screen. The content and the design of the exhibit are fascinating. Each section is introduced by large images from the actual exhibit. The...

Offered by the Smithsonian National Museum of American History, this Web site is an attractive presentation of the early 1940's via magazine covers and commentary about them. In the wake of September 11, having seen the phrase "God Bless America" posted on signs ranging from church fronts and bumper stickers to restaurants windows and gas stations, readers should relate to the use of the 1942...

Sponsored by the National Museum of American History, Teaching Math in America examines the evolution of math technology from the beginning of the nineteenth century through the end of the twentieth century. Divided into four sections, the site begins with the Early Republic, which explores the years between 1800 to 1860 when American children were using slates to write down their work. The second...