Each publication in the Eisenhower National Clearinghouse (ENC) Focus series presents a small selection of the Clearinghouse collection focused on a topic of particular interest to mathematics and science teachers. In addition to meeting general requirements for inclusion in the ENC collection, curriculum materials in the Focus series are:…

Ten issues of a monthly social studies resource, each with a different topical focus, are included in this document. The issues focus on: the American family; the environment; the developing world; U.S. and world population; U.S. and world energy; the arms race; employment and housing; world product and trade; social programs in the federal…

Following a brief historical review of the mechanism of mathematical modeling, examples are included that associate a mathematical model with given data (changes in sea level) and that model a real-life situation (process of parallel parking). Also provided is the rationale for the curricular implementation of mathematical modeling. (JJK)

Articles in this annual serial include the following: "Four decades with the Computer" (Winfred P. Lehmann); "The Uses of the Personal Computer in the Humanities" (James W. Marchand); "Digging in the Dictionary: Building a Relational Lexicon To Support Natural Language Processing Applications" (Martha Evans, Judith…