Factorials are discussed, with note of the enormous size on n! even for modest values of n. A recreational problem to determine the number of zeros at the end of numbers such as 10,000! is given, with a computer program. (MNS)

Designs on a circular geoboard lead to an investigation of factors, primes, relative primes, and modular arithmetics. (DT)

This metric puzzle is designed to give students practice in linear measurement through fitting sidewalk pieces together on the game board. A pattern for the gameboard is included. (DT)

This column includes the description of a game involving addition and subtraction of integers represented by colored bricks, a general formula for an enlargement in the Cartesian plane, an analysis of the possibilities for certain games of board Solitaire, and a BASIC program for a recreational mathematics problem. (DT)

Examples, exercises, and solutions involving compound growth are contributed that emphasize the areas of lending, borrowing, and investing. It is felt these areas present a wealth of opportunities for mathematical modeling, the development of algorithms, and practical applications, and can be fully explored throughout typical secondary…

The first nationwide effort of industry, education, and government to promote excellence in mathematics through a junior high school mathematics competition is described. The rationale for MATHCOUNTS, the organizational structure, the format, and mathematics content are described. Contains some sample items. (MNS)

Brief articles on a linguistic approach to learning mathematics vocabulary, designing cross-figure puzzles, an activity with probability, and a problem with an erroneous solution are included in this section. (MNS)

Discussed is the use of the book Flatland, written by Edwin Abbott, as a novel assigned for reading in secondary school geometry. The assignment is largely designed to reverse the low student interest in geometry. It is noted that overall the book was well received by students. (MP)

The material examines areas generated by combinations of: (1) Circles and Triangles; (2) Closely Packed Circles; and (3) Overlapping Circles. The presentation looks at examples of certain areas and at logical ways to generate the necessary algebra to clarify the problems and solve general cases. Ideas for extension are provided. (MP)