How computer methods can be applied to an old problem and how computer efficiency affects the solution to that problem are illustrated. (MK)

Activities to develop counting skills are given. (MK)

Programed instruction accelerated the ability of 62 children, ages four to six, in acquiring the concept of number conservation. (CP)

Attainment relative to six cognitive operations and four number and computational skills was assessed for 90 elementary students using clinical procedures. Variance associated with conservation of number, seriation, and logical classification competency accounted for a significant proportion of the variance in achievement scores. (Author/MK)

Changes in the elementary and junior high school mathematics curriculum that have occurred in the last 20 years and that may occur in the future are discussed. (MK)

This calculator experiment for seventh-grade students on prime factorization contains objectives, difficulties, a discussion, several examples, and a worksheet. (MP)

Four procedures used by children for deriving answers to unknown subtraction facts are described. They are counting forward, counting backward, derivation, and bridging. (MP)

A method of identification of pigs used by farmers is described as an application of a base three numeration system. (MP)

One teacher's struggle with conveying a concrete realization of the subtraction algorithm to students leads to a discussion of elementary mathematics instruction in general. (MP)

Mathematics textbooks tend to provide testing rather than teaching situations because of their heavy emphasis on symbolism. This article offers manageable ways to sequence mathematics instruction so that there are connective links from one level of understanding to the next. (JMF)

Instructional problems springing from teachers' incorrect use of mathematical models during the initial development of ideas and processes are analyzed. Examples of models for subtraction and division are given, and their appropriate use discussed. (DT)

Directions are given for an activity in which students are introduced to infinite geometric series. (DT)

Explores the mathematical abilities of human infants compared with various species of animals. Studies indicate that human infants enter the world capable of doing simple mathematical operations. Nonhuman animals can discriminate among sets of objects based on the number of items in each set. Further studies may pinpoint the age at which children…

Presents a unit of study for middle school mathematics that investigates number bases and their emerging patterns as a means to revisit the base-10 system. Describes how the unit incorporates recording, viewing, discussing, and journaling aspects. (SR)

Describes LOGO's turtle graphics capabilities based on a sixth-grade classroom's activities with negative numbers and Logo programming. A sidebar explains LOGO and offers suggestions to teachers for using LOGO effectively. (LRW)