Problems involving the relative positions of four soccer teams and possible point allocations for the teams are analyzed. (DT)

This brief biography of Riemann is one of a series of biographical sketches in this journal. Riemann was born in Germany in 1826 and studied with Gauss among others. His numerous contributions to mathematics include the invention of a non-euclidean geometry and the founding of topology. (SD)

This article recounts the history of a specific cop y of a mathematics textbook published in 1623. An indication of the style of the book as well as its contents is given. An attempt is made to identify the owners of the book and to explain some marginal notes. (LS)

Stamps from many countries which have commemorated the life and work of mathematicians are cited. Brief biographical sketches of these mathematicians are given, and catalog numbers for almost 40 stamps are noted. (DT)

The author supports the cause of accuracy and justification in reporting on the area of the history of mathematics and cites inaccuracies found in several publications on the subject. (MN)

Describes various kinds of games for one and two players. Provides the diagrams and rules for the games and puzzles. (YP)

This is the fifth in a series of articles of mathematical paper-folding recreations. Presented are instructions for folding a circular disc to produce regular polygons. (JP)

The author has written an unpublished summary of his reactions to an earlier article on number patterns used to provoke mathematical investigations. His work is an additional demonstration of the potential mathematics that can be stimulated from such investigations. (JP)

Competitions at one high school are described: they try to attract as many participants as possible, not just excellent students. In one type, creativity is stressed; another is a tournament; a third involves problem solving activities. Examples are included. (MNS)

Some lesson ideas with magic squares are given. The parametric form of three-by-three and four-by-four squares are each discussed and a worksheet is included on doing and making magic squares. (MNS)

A discussion of the various algorithms used for multiplication. Repeated addition, arrays, the distributive law, Egyptian and Russian Peasant Multiplication, Gelosia, Napier's Rods and Genaille's Rods are all described, and examples of multiplying using each method are explained. (DT)

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

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)