Two studies indicate that Oksapmin children progress from premediational to mediational phases in their use of body parts to compare and reproduce number and that this change generally occurs prior to the development of concepts of number conservation. A third study shows that this general change is manifested in culturally specific ways.…

A game designed to introduce aspects of coordinate geometry is reviewed. This game situation can be used to improve intellectual development with: the concept of mapping, the objectivation of operation systems, the verification of hypotheses, and organization principles. (MP)

Described are activities using paper plates with dots drawn on them which place a heavy emphasis on matching and ordering sets, on developing mental images of sets, and on perceiving sets of a certain size as composed of smaller subsets. Also suggested are activities involving numerals. (Author/TG)

The use of folding paper strips as a mathematical model in the instruction of operations with fractions is presented. (MP)

Three types of arithmetic algorithms are discussed and compared. These are algorithms designed to get the right answer, computer algorithms, and algorithms designed to get the right answer and understand why. (MP)

Suggestions for outdoor mathematics activities include six each for primary-age and intermediate-age children. (MK)

The authors develop the idea of Niven numbers and discuss their potential usefulness in the classroom. A computer program to generate Niven numbers is provided. (MK)

This discussion of decimals covers topics such as place-value, zero, the decimal indicator, grouping, the metric prefixer, and rules for interpreting dimensions. (MP)

A number of mathematical games, tricks and puzzles, are described as a way to make drills for elementary school students as interesting as possible. (MP)

This discussion concerns itself with difficulties encountered by students in multiplication and concludes that when children understand a problem they can usually solve it. (MP)

In this second article on flow charts, examples of pictorial and verbal flow charts are given, rules for constructing a flow chart are listed, and sample numerical flow charts are provided. (DT)

The author argues that the combined effects of adoption of the metric system and the popularity of hand calculators will necessitate curricular changes. Among these will be earlier and stronger emphasis on decimals as well as the introduction of new topics. (SD)

Evaluated the psychometric utility of a home literacy environment measure. Examined the measure's accuracy in predicting unique variance in children's performance on academic achievement measures after accounting for other important sources of variance, such as IQ and maternal education. Claims that this measure is psychometrically strong and…

Argues that the use of number sense can assist learners in their understanding of and calculating in mathematics. Reports on those aspects that were investigated with primary teachers' preservice teacher education students (N=6) at the commencement of a semester unit in mathematics education. Concludes that the students had at least a limited…

Describes six key practices vital to a problem-centered instructional approach to number sense and computational strategies. Also presents actual classroom examples of strategies. (AIM)