In this article, the author argues that there is a big conceptual difference between number lines and number strips and that number lines should be consistently used as early as Y1. Her interest in the use of the number line as a powerful image of the real numbers, and how this is introduced in the early years, comes from her own experience as a…

This article presents some wonderful books that reinforce math concepts with young children. In "I Spy Two Eyes: Numbers in Art," children see reproductions of the work of famous artists and count elements in the pictures. A list of math books that reinforce math concepts is included.

Certain definitions introduce appropriate concepts, among which are the definitions of the counting functions of the primes and twin primes, along with definitions of the correlation coefficient in a bivariate sample space. It is argued conjecturally that the characteristic functions of the prime "p" and of the quantity "p"+2 are highly…

This report focuses on the performance of fourth-and eighth-grade students in Puerto Rico in various mathematics content areas on the 2005 National Assessment of Educational Progress (NAEP) in mathematics. The NAEP mathematics assessment was administered to public school students in Puerto Rico for the first time in 2003. Although NAEP had…

This article describes how first graders' sense of number can be developed through the perspective of measurement. (Contains 5 figures.)

Forty-five children with mathematics learning disabilities, with and without comorbid reading disabilities, were compared to 45 normally achieving peers in tasks assessing basic numerical skills. Children with mathematics disabilities were only impaired when comparing Arabic digits (i.e., symbolic number magnitude) but not when comparing…

Because of the educational importance of mathematics and science, IEA's (International Association for the Evaluation of Educational Achievement) Trends in International Mathematics and Science Study, widely known as TIMSS, is dedicated to providing countries with information to improve teaching and learning in these curriculum areas. Conducted…

This programed text is an introduction to the algebra of complex numbers for engineering students, particularly because of its relevance to important problems of applications in electrical engineering. It is designed for a person who is well experienced with the algebra of real numbers and calculus, but who has no experience with complex number…

The purpose was to ascertain whether there existed differential achievement effects associated with the factors and levels of context, form, item-stem and item-response format, size of common number, and school grade, as they relate to two variations of distributivity. Twelve 9-item tests were constructed and given to intact 4th-, 5th-, 6th-, and…

Several activities designed to allow students to play with and explore the special properties of the number nine are presented. A reproducible activity page is included. (MT)

Table games with special dice can help children with severe learning difficulties to improve their basic number skills (rote counting, numeral recognition, and counting out a quantity of objects from 1-200. Field testing supported the value of such games with 9- to 18-year-olds with moderate mental handicaps. (CL)

The study evaluated an errorless procedure for teaching nine educable mentally retarded students to solve missing minuend problems. Seven Ss acquired the target skill in a nearly errorless fashion in 75 to 172 minutes of individual training time. The other Ss required programatic alterations. (Author/CL)