Students who discover how to count by tens starting at a number other than 10 learn about the basic structure of the decimal system in addition. (CL)

Investigates the ability of 24 children ages two, three, and four to discriminate between two small object collections on the basis of numerosity and to maintain that discrimination across changes in number-related cues. Most children learned the discrimination and transferred their learning on the basis of relational cues. (Author/CI)

A "proof" is given to show that the set of natural numbers is not countable. (DT)

Arithmetic is the science of numbers, and also the art of computation. This textbook presents mental and written arithmetic through simple numbers. [This book was written by the Brothers of the Christian Schools and published by De La Salle Institute.]

Examples of unrealistic'' mathematics and mathematical reasoning are presented and discussed. (DT)

Summarizes a survey concerning the need for statistical typists. (JS)

A digital bracelet is a cyclic sequence of digits in which each term is the units' digit of the sum of the previous "N" terms. This article discusses some properties of the digital bracelet with N=4 which starts 1, 9, 7, 1. (MM)

Articles on the factorization of polynomials using a rejection theorem; a general formula for the N-th of a sequence; and integration by undetermined coefficients. (MM)

The use of two rulers to teach negative numbers is described. (DB)