Three worksheets are provided; the aim is to develop skill in visualization of the cube from two-dimensional patterns. (DT)

Topics discussed in this column include patterns of inverse multipliers in modular arithmetic; diagrams for product sets, set intersection, and set union; function notation; patterns in the number of partitions of positive integers; and tessellations. (DT)

Examples of teaching styles that have proven successful are presented, related, and analyzed. Uses of resources, types of assignments, and management systems are discussed with the emphasis on individualizing instruction. (LS)

Extraversion-introversion was found to interact with sex and item type, thus necessitating separate conclusions for boys and girls, these in turn being qualified by item type. (Authors)

A team-teaching structure consisting of full-time teachers, student teachers and a university methods instructor is described. Details are given of the program objectives, student assessment, grouping, evaluation criteria, grading, and highlights of the project. (DT)

Directions are given for seven activities involving the folding of paper strips to illustrate geometric concepts. Properties of pentagons, triangles, hexagons, and Mobius bands resulting from the various foldings are discussed. (DT)

A test of the hypothesis that writing and using computer programs related to selected mathematical content positively affects performance on those topics. Results particularly support the hypothesis. (MM)

The conclusion of the article of the same title in the previous issue. (MM)

This article is a reply to many of the criticisms made of the IEA International Study of Mathematics Achievement in the same issue of the Journal for Research in Mathematics Education. (CT)

Describes two methods to resolve common difficulties in solving problems. The first is used when the solver becomes stuck with a problem and no idea seems to come to mind. The second is suitable when the solver is trapped in a loop and goes in circles around the problem. (JN)

Tape counters on recording equipment indicate the number of revolutions made by the take-up reel as magnetic tape is wound on it. Relating the number of minutes of play of the machine to counter values poses interesting problems. Five problems are presented as well as background information for their solution. (JN)

Excerpts from a policy analysis of Florida's high school graduation requirements of three years of mathematics and science. The report forecasts the probable impact of the policy in the areas of students, curriculum, staff, resources, and control. Ways of monitoring the actual consequences of the policy are proposed. (MLF)

This study investigated the effects of specific criteria for marking a test on its reliability and validity. Eight algebra word problems were administered to grade 10 students. The objectivity of scoring criteria improved the reliability of the test, but did not affect its validity. (MNS)