Can the sum of the edges, the surface area, and the volume of a three-dimensional object be numerically equal? Solutions to this challenging problem are discussed. (MNS)

Rules from an old mathematics textbook are discussed. Suggested are approaches to using the materials with students, challenging them to come up with explanations of why the rules work. (MNS)

Presents three problems, each with a computer solution in BASIC programming language: (1) finding sum equals product for three-digit numbers; (2) finding cases of improper cancellation that give a correct answer; and (3) finding perfect numbers. Some suggestions for further investigation are included. (JN)

Discusses: (1) use of matrix techniques to write secret codes (includes ready-to-duplicate worksheets); (2) a method of multiplication and division of polynomials in one variable that is not tedius, time-consuming, or dependent on guesswork; and (3) adding and subtracting rational expressions and solving rational equations. (JN)

Presents historical comments related to these terms: absolute value, add, algebra, algorithm, calculus, ellipse, fraction, hyperbola, logarithm, mantissa, multiply, operations, parabola, radian, root, sine, and trigonometry. Suggests that students become involved in mathematics history projects. (JN)

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

Techniques that students can use to make predictions about performances in the Olympics include point estimation. This is used to estimate a single value using a set of data. A worksheet for students is included. (MNS)

Activities are described for a probability unit in which the Markov process is studied and applied to the weather. (DT)

Several methods for finding rational numbers which lie between two given rational numbers are described. (DT)

A geometric area problem is analyzed and generalized. (DT)

Test construction, administration, grading, and reviewing are discussed. (DT)

Methods for getting a computer-linked plotter to do a total plot of a relation are discussed. (DT)

This article presents, in the context of solving a specific mathematical problem, an argument to indicate how problem posing can lead to a deeper understanding of what is involved in the act of problem solving. (DT)

Four problems concerning the maximum number of regions determined by circles and polygons are explored. (DT)