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)

Four games that reinforce the concepts of place value and ordering numbers are described. (JT)

An approach is illustrated that introduces selected models of addition and subtraction to students who have previously learned a model for either operation. (JT)

A game for two teams employs dice, meter sticks, and Cuisenaire rods. The game gives practice in number facts, regrouping, and use of rods; it can also serve as an introduction to the metric system. (SD)

Games which use dominoes, dice, and playing cards to promote computational skill are described. (SD)