Today's educators face the daunting challenge of preparing new generations of young people for life in a world undergoing economic, political, and cultural changes on a scale unmatched in history. After five decades, the United Nations remains at the center of the global effort to ensure peace and the equitable enjoyment of the planet's resources. Yet instruction about the United Nations' work in the curricula and textbooks in many of schools remains inadequate. There is a vital need to enhance the education of young students regarding the ever more dynamic interconnections of their world and the central role that the United Nations plays in promoting harmonious relations among governments and peoples everywhere. Various United Nations organizations have produced practical teaching materials to help meet the need. This edition has been thoroughly updated, reflecting many innovative ideas and practices adopted by international educators. Chapter titles include: (1) "We, the Peoples--Lower Primary"; (2) "Developing Our Community--Upper Primary"; (3) "The Great World Changes--Lower Secondary"; and (4) "Challenges Ahead--Upper Secondary." Eight appendices, an index, a listing of principle editorial counselors and pedagogical advisors, and a section for comments and suggestions conclude the volume. (BT)