Discusses terminology used by teachers for the symbol "-x" which cause students to become confused. Suggested methods of avoiding this confusion are presented. (JP)

Grade nine students (n=116) were assigned to five different algebra word problem test versions: textbook, student, pictorial, textbook plus pictorial, and student plus pictorial versions. Analysis by IQ levels yielded results different from those obtained in previous studies. (JP)

The use of Karnaugh maps in determining the number of elements in a set, in chains of reasoning, in comparing solutions of a problem, and in Boolean algebra is illustrated. For the first article in this series, see SE 507 074. (DT)

Four methods of finding the range of values of the solution of a problem when the data are known to lie within given bounds are illustrated. (MS)

The nature and purposes of secondary school mathematics are discussed, with specific analysis of the role of algebra. Appropriate topics are suggested, with elaboration on level of abstraction and usefulness. (DT)

This is the second of two articles giving examples on the use of Karnaugh Maps in solving problems in set theory and in Boolean algebra. Simplification techniques of the maps are concisely included. For Part 1, see volume 1, number 7, pp4-7, November 1972. (DT)

A selection of definitions and word problems found in an 1824 algebra textbook. (DT)

A discussion of the relation between traffic density, speed and flow, used as an illustration of the ideas of functions and mathematical models. (MM)