Number conservation skills were investigated in 10 8-to 16-year-old mentally retarded children (IQ 29-65). (CL)

In a series of projects centered in different areas of Africa, mathematicians from England and the United States joined African educators in developing and testing a mathematics curriculum designed to teach the basic concepts which are important and useful in all countries. (SD)

A program in which Spanish-speaking high school students were taught basic number skills is described. The program was individualized, and used a variety of activities and materials. (SD)

Describes student difficulties with understanding quantitative concepts as presented in selected third grade social studies textbooks. Test results of student accuracy in understanding of quantitative concepts are presented and discussed, and teaching methods for quantitative reinforcement are provided. (Author/DB)

The article presents a revised model for individualized mathematics programing for the learning disabled adolescent. (PHR)

Teacher-developed materials are described, with six activity cards and a discussion of the objectives of the full set of materials. (MP)

A classroom exercise which encourages experimentation including formulation and testing of conjectures about number relationships involving factors and multiples is illustrated. (MN)

The perceptual transformation approach was found to be more effective in facilitating the acquisition of conservation subskills than the numerical operational approach. Neither approach was effective in facilitating the acquisition of conservation of number by nonconserving 4- and 5-year old children of lower socioeconomic status. (MN)

The observations of a fifth-grade student concerning number patterns are recorded and discussed. (SD)

Students examined patterns emerging when numbers placed at vertices in a braided pattern were summed. (SD)

Brief descriptions of serious learning disorders which apply to mathematics are given. (DT)

The number concepts of greatest common divisor and least common multiple are related to star patterns created through line designs. (JT)

The possibilities that magazines have to offer in the teaching of mathematics with consumer-related problems are discussed. (JT)

Instructional techniques are given for the use of calculators in (1) finding prime numbers, (2) solving trigonometric equations, and (3) solving polynomial equations. (CP)

Two games are described. "Operation: Four" is a game which provides students with practice in basic computation. "Geometry" is a game which enables students to participate in a competitive match of definitions. (JT)