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)

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)

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)

What is number sense, why it is important, how it is taught, and how it is measured are each discussed. Examples with concrete materials, calculators, and pattern recognition are included. (MNS)

The focus is on number sense in which students use the language, concepts, and operations of mathematics to find the desired numbers on a hundred chart. Worksheets for levels one-two, three-four, five-six, and seven-eight are included. (MNS)

Describes the data collection and interpretation project of primary grade students involving predicting, graphing, estimating, measuring, number problem construction, problem solving, and probability. (MKR)

Discusses weak links in children's developing power in counting. Presents assessment information for mathematics curriculum planning and activities embedding the subskills of counting into daily routines. (MKR)

Examines infinite sets and cardinality classifications of empty, finite but not empty, and infinite through discussions of numbers that fall into particular categories. Categories discussed include perfect numbers, Mersenne primes, pseudoprimes, and transcendental numbers. Discusses the Null Or Infinite Set Effect (NOISE) and infinitude resulting…

A learning activity relating modular arithmetic to patterns of figures determined by points equally spaced around a circle is described. (SD)

The focus of this booklet is on matching, recognizing, and identifying colors, shapes, and sizes. Concept development as well as vocabulary learning are goals. A variety of materials are used in the activities. Activities for children from preschool through grade 2 are grouped by topic. (MNS)

Intended for young children just becoming familiar with computers, this counting book introduces and reinforces new computer vocabulary and concepts. The numbers, from one to twelve, are presented along with words and illustrations from the world of computers, allowing for different activities in which children can count or match and name the…

After a discussion on planning instruction, a series of activities designed to develop pre-number and number concepts are presented. Activities are arranged by difficulty within sections devoted to classifying, comparing, ordering, measuring, organizing data, distinguishing shape and size, recognizing patterns, number awareness, and counting. (SD)

This paper examines some of the manipulative aids used in elementary mathematics instruction from the point of view of the cognitive structures needed to understand them. The number line, measurement activities, models for place value, and models for fractions are discussed. (SD)

Ancient numeration systems form the basis for these worksheets. (SD)