The main problem of this study was to attempt to determine the source of adults' nonconservation error as well as to explain young children's apparent success. Subjects were 188 children from elementary school, high school, and college. (Author/MP)

Four articles are presented in this monthly column: dealing effectively with metric conversions; teaching how to round numbers; why a false statement implying a false statement is true--a discovery explanation; and a third-grade puzzle with interesting implications. (MP)

A number of linguistic problems identified through analysis of primary mathematics texts are discussed. These include vocabulary, readability and perception. (MP)

Topics covered include: a game involving dice, using curve stitching to teach number concepts, and an activity to introduce rectangular coordinate systems. (MP)

Available from: British Medical Journal, 1172 Commonwealth Avenue, Boston, Massachusetts 02134. In order to determine whether Central Nervous System irradiation effects intellectual abilities, 28 children in remission at least 2 years after completing chemotherapy for acute lymphoblastic leukemia were assessed on standardized psychological tests…

Projects that involve counting real things either from 1 to 100 or from 1 to 1000 are presented. The projects encourage children's guessing, ordering numbers, recording results in a variety of ways, counting elements of a subset as well as the entire set, and some problem solving. (MN)

The author cites observations of his own children that reflect their concept of fractions and analyzes their conduct in each case. (MN)

The assumption that subjects compare symbolic stimulus magnitudes with respect to a reference point was examined. Results indicate that subjects can strategically vary the process for comparing stimuli to a reference point and can perform various types of analog arithmetic using the linear number scale or a nonlinear scale of subjective digit…

Instructional sequences are presented for teaching two-digit multiplication and division with one- and two-digit divisors using a base-oriented approach. (MN)

Examples are given of several compound games of strategy that involve mathematical theory and provide new bases for understanding and axiomatizing the concept of "number." (MN)

Use of graphs in studying greatest common divisors, least common multiples, and other concepts can illustrate patterns related to the definitions of these concepts. (SD)

Investigated with three Down's Syndrome girls (aged 6-7 years) was the hypothesis that a videotape recording of a child correctly identifying numbers would serve to increase her number competency. (JYC)

Relationships between elementary analytic geometry and several types of number sequences are discussed. (JT)

Four games that provide practice with fractions are described. The games involve naming fractional parts, identifying equivalent fractions, adding fractions, and multiplying fractions. (JT)

Suggestions and examples are given for changing the passive bulletin board into an activity-oriented bulletin board which aids in teaching mathematics. (JT)