Explains an application of matrix algebra which involves probability matrices and weather predictions. Using probabilities of sunny or cloudy weather students can determine the effect weather on day one will have on subsequent days. (DH)

A general description of microcomputer-based spreadsheet software capabilities and their usefulness in library management analysis and planning are presented. Five specific spreadsheet models which apply to retrospective conversion cost and scheduling, COM and book catalog costs, and acquistions processing costs are discussed and displayed in…

Presents two papers commenting on previous published articles. Discusses formulas related to the determinants of sums and tests the formulas using some examples. Provides three special cases of the determinants of sums. (YP)

A sample of novel verbal problems which can be solved by using systems of linear equations with free variables is presented. The procedure of Gaussian elimination is used to solve the system. (KR)

Students can learn to make algebra, trigonometry, and geometry work for them by using matrices to rotate figures on the graphics screen of a graphing calculator. Includes a software program, TRNSFORM, for the TI-81 graphing calculator which can draw and rotate a triangle. (MKR)

Students were presented with the problem of finding all magic squares of order three. (SD)

Examples for determining the equation of a line through two points or a quadratic function that contains three noncollinear points are presented. (MNS)

Methods for solving logic puzzles which focus on thought-free procedures that facilitate solution are discussed. Two of the procedures noted pertain to the interior of any submatrix, whereas others span several submatrices. A puzzle is presented at the conclusion as an exercise for practicing the methods promoted. (MP)

Provides an activity as an example of how matrices can be introduced from finite graphs and how finite graphs can be analyzed by examining their matrix representations. Presents the materials, objectives, prerequisites, directions, extension activities, answers, and worksheets. (YP)

The effects of expressive modeling experiences on the observational learning of generative language by children with severe mental retardation was investigated. All six children (aged six-nine) demonstrated observational learning of responses modeled by their peers. Organizing the modeling experiences according to matrix-training principles…

Describes how different operations on matrices can be modeled with simple spreadsheets. Presents three activities on this topic. (ASK)

Matrix organization can be used to construct math word problems for children with mild disabilities. Matrix organization specifies the characteristics of problems, such as problem theme or setting, operations, level of computation complexity, reading vocabulary level, and need for classification. A sample scope and sequence and 16 sample word…

Finding the shortest route between two points can be approached by vector methods. Several types of matrices modelling a map of 6 cities are described. (SD)

Discusses collection development policy as means to express and systematize guidelines for collection building that fulfill three basic functions: the referential, the generative, the rhetorical. Division of policy into subject categories, and use of "collection levels" to rank the collection and collecting effort for each subject are…

Explains a three-dimensional conceptual model designed to help outdoor educators plan and evaluate programs that provide primary and reflective experiences in, about, and for the outdoors and that bring about positive growth in the cognitive, affective, and psychomotor domains of learning. (JHZ)