An enrichment activity used in sixth and seventh grade mathematics classes to develop geometric concepts is presented. (JG)

This article describes how the arrival rate and service time distribution of a queue were investigated, and how a subsequent random-number simulation of the queue was carried out. (MM)

by a geometric method, a one-to-one correspondence is set up between the set of real numbers and the set of all points, except one, on a circle of unit diameter. Then some interesting results relating the corresponding points and real numbers are derived. (Author/CT)

The material attempts to find the maximum number of non-congruent figures that can be generated from a nine-pin geoboard, and considers the maximum number of figures possible on boards of any size. The exploration starts by grouping sets of pin patterns into groups of equivalent classes. (MP)

Middle school students practiced their math skills and learned about the stock market by selecting and managing their own hypothetical portfolios of real stocks. (SJL)

Describes a program written in BASIC, called BIGNUM, that was designed to aid in handling big numbers. The program adds, subtracts, multiplies, divides, and raises to a power integers of up to 1024 decimal digits and is thought to be usable on many types of machines. (MP)

A lesson in which a class was directed to solve the square and cube roots of difficult values without using calculators is presented. (MP)

A history of perfect numbers is presented, which briefly covers the 27 values known at this time. (MP)

Information about a student-run mathematics tournament is presented. Included are sample test questions created by students. (MP)

A nine-session mathematics conference for ninth graders is described. Guidelines for preparing such a conference are suggested. (MK)

A process for eliminating the xy term in a quadratic equation in two variables is presented. The author feels this process will be within the reach of more high school students than more commonly used methods. (MK)