This article first classifies fractions according to whether their decimal expansions terminate or repeat, and then considers the corresponding classification when the expansion is made in the base "s" numeration system. (MM)

The author shows that the set of all sequences in which each term is the sum of the two previous terms forms a vector space of dimension two. He uses this result to obtain the formula for the Fibonacci sequence and applies the same technique to other linear recursive relations. (MM)

Two 9-year-old boys are described who performed in the normal range on measures of IQ, language ability, and reading. The boys were unable, however, to acquire elementary numerical skills and also manifested other specific cognitive deficits associated with the Gerstmann syndrome. (Author)

Contrasts nominal, cardinal, and ordinal uses of numbers with linguistic and historical examples. (MKR)

Presents an elementary physics problem, the solution of which illuminates physical meaning and its relation to real, imaginary, and complex mathematical quantities. (JRH)

The repeating cyclic fraction, 1/7, provides a plausible explanation for use of the number 71.428571 (71 and 3/7) in cosmology; for 22/7 as a value for pi; and for concepts of time and circle division related to breaths per minute. (Author/MKR)

Demonstrates some of the usefulness of number theory to students on the high school setting in four areas: Fibonacci numbers, Diophantine equations, continued fractions, and algorithms for computing pi. (ASK)