Study tests four predictions derived from Piaget's cognitive theory. (CB)

Worksheets provide activities with a modified number line and involve ordering numbers, number facts, and estimation. A suggestion for a bulletin board display is included. Two problem posters are also provided. (DT)

The problem of determining the number of squares on a checkerboard is extended to finding the number of rectangles on an n x n board and finding the total numbers of cubes and rectangular solids in an n x n x n cube. (DT)

Chains made up of alternate arrows and numbers are used to represent the result of repeated applications of a function. A collection of problems based on these arrow chains is provided. (DT)

Activities, instructional methods, and some ideas from educational psychology used in tutoring a second grader in addition and subtraction are described. (DT)

A discussion of behavioral objectives of teaching mathematics classified under the heading of application, analysis, and synthesis. This article is a continuation of previous articles in this journal. (DT)

Activities using egg cartons to teach addition, subtraction, different bases, and probability are described. (DT)

A Math Rummy card game, a stock market enrichment activity, and a puzzle in logical reasoning, all used with seventh and eighth graders, are described; directions for constructing a clock with suggestions for its use at the first grade level are given. (DT)

Patterns in modular arithmetic are discussed: (1) multiplication tables, and (2) diagrams obtained by joining points on the circumference of a circle. (MM)

A combination of readiness and body-part training was the most effective in producing number conservation with external objects. (Authors)

Suggested activities involving number patterns, using the idea of a number machine." (MM)