A method of using a modified number line to illustrate concepts of addition, subtraction, multiplication, and division in a modular system is presented. (DT)

Portion of the chapter on Numerals" from author's forthcoming book on Japanese and the Other Altaic Languages". Paper delivered at the March 1969 meeting of the Association for Asian Studies on The Periphery of the Japanese Language". (DS)

The author argues that the idea of canonical elements provides a coherent relationship between equivalence relations, the basis of modern approaches to too many mathematical topics, and the traditional aspect of computation. Examples of equivalent relations, canonical elements, and their calculations are given. (MK)

Discusses mastery goals and developmental levels of students aged 3-7 for learning numbers in informal situations. (KHR)

Demonstrates how to use graphing calculators to explore rational number approximations to irrational numbers. (Author/NB)

Describes the kinds of computational abilities achieved by a class of 4th grade students who were part of a research program for teaching rational numbers. In this program, students build on intuitive understandings of percents and proportions for the development of overall understanding of the number system and are encouraged to invent their own…

Analysis of characteristics of rational numbers in magazines written for children, teenagers, and adults indicated that difficult mathematical concepts that appear in the media are much more prevalent in adults' magazines than in the others. Discusses numeracy demands of everyday life. Appendix contains coding scheme. (34 references) (Author/MKR)