Casual and clear but definitely upper-level discussion of rational, real, imaginary, and several other types of numbers. Links to related sites.

From the Library of Congress "Today in History," this website provides biographical information about Henry David Thoreau along with photographs of Thoreau and Walden Pond. Provides links to online text for Thoreau's work, links to information about other transcendentalists, and links to information about the evolution of the conservation movement. Also includes a link to a website providing a virtual tour of Concord, Massachusetts.

U.S. History is designed to meet the scope and sequence requirements of most introductory courses. The text provides a balanced approach to U.S. history, considering the people, events, and ideas that have shaped the United States from both the top down (politics, economics, diplomacy) and bottom up (eyewitness accounts, lived experience). U.S. History covers key forces that form the American experience, with particular attention to issues of race, class, and gender.Senior Contributing AuthorsP. Scott Corbett, Ventura CollegeVolker Janssen, California State University, FullertonJohn M. Lund, Keene State CollegeTodd Pfannestiel, Clarion UniversityPaul Vickery, Oral Roberts UniversitySylvie Waskiewicz

An Awakening of Religion and Individualism
Antebellum Communal Experiments
Reforms to Human Health
Addressing Slavery
Women’s Rights