Presents activities designed to provide students with an informal introduction to deductive logic through the use of the problem-solving skill of "eliminate possibilities." Includes rationale for the activities, background information, list of materials needed, objectives, four ready-to-copy student worksheets, and instructional…

Discusses experiences in elementary statistics that involve describing data by measures of central tendency and dispersion and that are appropriate for students in secondary schools. Includes background information, instructional strategies, procedures, and a ready-to-duplicate student worksheet. (JN)

Presents ideas related to: (1) graphs (considering patterns, periodic functions, and problem-solving); (2) curing common errors (such as an incorrect way of canceling); (3) the median of a trapezoid; and (4) using a telephone directory to teach probability, graphing, random-number tables, reading tables, calculating percentages, and other topics.…

Presents activities involving the addition of antinumbers (which uses novel numerical characters); a puzzle which combines practice in working with polynomials and solving simple equations with intriguing facts about turkets; and searching for the number of different right triangles in a given square grid (which helps develop spatial…

Provides computer programs (for Apple microcomputers) for drawing (in high resolution graphics) a three-leaved rose, concentric circles, circumscribed and inscribed astroids. Sample output and discussions of the mathematics involved in the programs are included. (JN)

Data were collected on the ways in which pupils chose whether or not to study mathematics at the A level (advanced). Both positive and negative influences are discussed. (MNS)

Concepts of probability held by pupils ages 11-16 were ascertained, in conjunction with a unit focusing on possible biases toward the number 6. (MNS)

How the concept of function sheds new light on one of the central tasks of algebra, that of solving equations, is discussed. Many specific examples are presented, and a theoretical basis is included. (MNS)

How min-max problems can be solved with trigonometry and without calculus is described. (MNS)

Four worksheets are presented, each using cubes to develop students' spatial visualization abilities. Directions and answer keys are both included. (MNS)

The "Animals" program found on the Apple II and IIe system master disk can be adapted for use in the mathematics classroom. Instructions for making the necessary changes and suggestions for using it in lessons related to geometric shapes are provided. (JN)

The game of craps is analyzed in terms of mathematical expectation. Betting examples are presented and discussed, and a computer simulation program in BASIC is included. (MNS)

A previous article argued that the tradition of teaching sentential logic in geometry should be challenged and suggested that sentential logic be moved to algebra and replaced by inferential logic. Specific inferential logic topics were also suggested. This article elaborates on the inference schemes suggested and describes general proof…

Four masters suitable for copying are given for models of solids: half-cube, square based oblique pyramid, irregular hexahedron, and square based right pyramid. Suggestions for the teacher are included. (MNS)

Illustrates how a simple computer program on transformational geometry can be used. The three examples consider use when the program is unknown, the program listing is known, and the existing program is to be modified. (MNS)