The author attempts to provide in compact form information to correct problems related to "frieze groups" and "wall paper groups" and, in addition, provide useful visual references for readers of the literature on the plane symmetry groups. (MN)

The origins of trigonometry, several trigonometric terms, and some theorems of plane trigonometry are discussed. (MN)

Sums for divergent series that were seriously considered by eighteenth century mathematicians are shown to have reappeared as result of new interpretations for divergent series that make these previous conclusions valid. (MN)

The origin of the magic square, its numerical concepts, and some procedures for its construction are discussed. (JT)

The use of trigonometry in making astronomical calculations prior to the invention of logarithms is discussed. (JT)

A general historical background for the development of some common formulas concerning length, area, and volume is given through a discussion of various written records. (MN)

The author presents the rationale, activities, and reactions toward a project concerned with conditioning mathematicians for the purpose of contributing meaningfully toward the solution of some of the problems of mathematics education at the pre-college level. The conditioning process includes one full academic year in the pre-college classroom.…

In this address to the Australian Association of Mathematics Teachers the author advocates the use of historical topics in the mathematics classroom. He refers heavily to the 31st yearbook of the National Council of Mathematics; other references are provided. (SD)

Designs and arrangements of pentominoes are examined. (SD)

How to take an existing magic square and surround it with a magic border is described, with a number of examples. (MNS)

The historical origin of star-polygons is noted and the mathematics of them presented, with illustrations. Seven theorems are included, as well as a computer program designed to classify star-polygons. (MNS)

The rules for playing the medieval game of Rithmomachia, a battle of numbers, is described. Moves, rules of capture, play with the pyramids, components of pyramids, victories, and hints on strategy are each given. (MNS)