Presented are a series of word problems which give students the opportunity to use or develop problem solving skills. The problems are open-ended, with possible answers included. (JP)

Materials and learning activities for a broadened approach to number line study, measurement relationships, and slide rule instruction are described. (DT)

Cuisenaire, Dienes and traditional methods of teaching mathematics were compared by pre- and posttesting pupils in British junior schools during a three year period (1961-63) on mechanical and problem arithmetic, concept knowledge and attitudes. Details of the varied experimental design are given in addition to data and interpretation. (JP)

Finding patterns in the relationship between the number of sides in a polygon and the total number of diagonals is used as vehicle to discuss discovery learning. (DT)

A method of showing the meaning of decimal fraction without using fraction words or notation. One technique described in detail uses large squares, strips, and small squares; using the metric system and decimal coinage is also suggested. (DT)

A small study showed that low ability students learned as much in three days' instruction as medium ability students in two days and high ability students in one day. The topic was base five numeration. (MM)

This column discusses problems involving a paper folding game for bicimals, the sum of exterior angles of polygons and polyhedra, solving quadratic equations in finite arithmetics, nomograms, and cube folding patterns. (DT)