Plane figures constructed with curves of constant width "roll" evenly. The circle is but one example of such figures. Presented is an activity to direct students in the construction of a plane figure with curves of constant width which is not a circle. (JP)

The development and implementation of the Midland Mathematical Experiment, a curriculum project for the secondary school level, is described. (DT)

A new set of problem cards intended to bridge the gap between Nuffield assignments in primary mathematics and secondary mathematics courses is described. (DT)

Rules for three mathematics games are specified. One game is concerned with providing an entertaining framework for routine practice; the other two games are based on estimating probabilities of outcomes. (DT)

This article displays the graphs of number patterns obtained by writing each number in the pattern as an ordered pair, plotting the ordered pairs, and joining consecutive points by straight lines. (DT)

Worksheets introducing the concept of loci as paths of points moving under specific conditions are presented. (DT)

The organization of a class project involving the writing of a book on matrix algebra is described; benefits of the project for both the students and the teacher are discussed. (DT)

This annual annotated listing of research pertaining to elementary and secondary school mathematics includes 13 research summaries, 71 journal-published reports, and 335 dissertations. (JP)

Advantages and disadvantages of using electronic calculators in the mathematics classroom are discussed; implications for the teaching of mathematics and for the mathematics curriculum are considered. (DT)

Methods of drawing Karnaugh maps to represent sets and applications of Karnaugh maps to logic and to probability are presented. (DT)

Meanings of the word square'' are explored; the square as a figurate number, the sum of consecutive odd numbers, dissections of the square, and magic squares are discussed. (DT)