Textbooks have been standard schoolroom fixtures for as long as most living citizens of this country can remember. Many turn-of-the-century students were introduced to reading through the moralistic McGuffey Readers and struggled through the rather drab and colorless pages of volumes on history, geography and civics. In contrast, today's textbooks contain not only narrative content accompanied by colorful photographs and graphics, but also section and chapter exercises that are extended through the use of worksheets and other materials. Moreover, the textbook and its related student materials are packaged together with teacher's editions and tests in grade-level sets that amount to content area programs rather than mere texts.