A math strategy using an "add-card" which illustrates simple addition facts was originally developed for learning disabled students but was also successfully used with mildly retarded students. (CL)

The rules for playing the medieval game of Rithmomachia, a battle of numbers, is described. Moves, rules of capture, play with the pyramids, components of pyramids, victories, and hints on strategy are each given. (MNS)

A sequence of exploratory activities is designed to help beginners use the BASIC language and make simple pictures by graphing pairs of numbers. (MNS)

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

Rules are given for two different arithmetic games. A list of suggestions for constructing games and maximizing their effectiveness are included. (DT)

Four worksheets are provided for giving students experience with addition facts, subtraction facts, multiplication facts, and with building equations involving more than one operation. (DT)

Graphical representations of modular arithmetic multiplication tables and of equations in modular systems are investigated. (DT)

A paper staircase drawn on a grid forms the basis for a discovery lesson in algebra. (DT)

The checking of subtraction and division problems is discussed. (DT)

Methods of handling a student's incorrect mathematical generalization are discussed. (DT)

This article discusses how numbers are stored internally in a computer. (DT)

This article treats aspects of Gaussian integers that form a setting in which students can generalize concepts from elementary number theory. (DT)

A method for compound subtraction which avoids the need to memorize a difficult set of subtraction facts is explained. (DT)