The relation between mathematical and computational aspects of recursion are discussed and some examples analyzed. Definition, proof, and construction are considered, as well as their counterparts in computer languages (illustrated with Logo procedures). (MNS)

A meta-analysis of 79 research reports on the effects of calculator use on students' achievement and attitude in grades K-12 was conducted. At all but one grade level, students using calculators maintained or improved their paper-and-pencil skills. Suggestions for the classroom are included. (MNS)

Kindergartners appeared to differ in their readiness to use a concrete counting strategy for addition. Many persisted in counting with objects. Mental counting strategies were sequenced. (MNS)

Establishing and maintaining the desirable kind of balance between meaning and computational competence is the subject of this reprint from a 1956 issue of the journal. Sources of the dilemma and suggestions for solution are discussed. (MNS)

Four worksheets and teaching suggestions are presented, with the focus on mental computation for levels 2-3; factors, levels 3-4; and nonroutine problems, levels 5-6 and 7-8. (MNS)

The history of mental computation in the elementary school curriculum is briefly described, followed by discussion of the benefits of mental computation. How thinking skills are enhanced is then illustrated. (MNS)

Provides general background on basic concepts of systems theory. Discusses applications of systems theory to computational and inferential chemistry in molecular and reaction systems, systems analysis, and synthesis. Describes methodology for studying chemical systems by computer and gives advantages of an integrated computational environment. (JM)

Activities with balance beams were used to motivate students and help them to learn basic mathematical principles. Illustrations are included. (MNS)

The role that food-preparation activities could play in developing understanding of mathematical ideas by middle school students is discussed. Measurement, computation, language, attitudes, and problem solving are addressed. (MNS)

Presents the results of a review of chemistry textbooks aimed at finding values for the equilibrium acidity constant for water and the hydronium ion. Only three of 23 give correct quantitative values for water and none for hydronium. Provides calculations of the constant for both water and the hydronium ion. (JM)

Studies abacus calculation to explore the development of skills and the resulting consequences. Consideration of the effects of abacus training, transfer of the skill to other tasks, and the contexts in which abacus skill develops demonstrates the multiple ways in which specific skills can contribute to cognitive development. (ETS)

A hierarchical-clustering technique was used to examine relationships among computation-related skills by pupils in grades one to four in two Irish schools. A clear hierarchical ordering of skills was obtained at each grade. (MNS)

Presents a list of Apple software that helps students develop specific skills through supplemental learning at home. Software, including program, manufacturer, grade level(s), and price, is provided for: writing; spelling; grammar; vocabulary; reading comprehension; computational mathematics; and mathematics concepts/applications. Also provides…

Mastering the basic number combinations involves discovering, labeling, and internalizing relationships, not merely drill-based memorization. Counting procedures and thinking strategies are components, and it may be that using stored procedures, rules, or principles to quickly construct combinations is cognitively more economical than relying…

The author first corrects Baroody's description of the network retrieval model for basic number facts, in which facts are stored in memory and retrieved as needed. He then indicates weaknesses in Baroody's argument. (MNS)