This annotated bibliography is the result of an effort to facilitate and stimulate teaching about the United Nations by bringing together, from a wide variety of sources, materials recommended for school use by educational authorities. Special emphasis is placed on new development in teaching about international understanding and extracurricular opportunities for student involvement. The bibliography is divided into the following categories: (1) curriculum aids for teachers including approaches and methods, curriculum units and promising practices, audiovisual material, and sources of information; (2) student participation both within the classroom and beyond, including summer opportunities; (3) background materials about the UN in general and about many of its special agencies; and (4) books for student reading. Most entries date from the late 1960's and early 1970's. Each item listed is available through the UN agencies, publishers, and organizations listed at the end of the bibliography or through information accompanying the entry. (Author/JH)