Describes "Bop," a game that considers solely the sequence of letters. Words are determined to be equivalent if different letters of one word become different letters in the other word in exactly the same order. Examples of four-, five-, and six-letter words and BOProblems are provided. (MDH)

The transformation assigning to every point its inverse with respect to a circle with given radius and center is called an inversion. Discusses inversion with respect to points, circles, angles, distances, space, and the parallel postulate. Exercises related to these topics are included. (MDH)

Presents mathematical models to determine whether seven-game baseball playoff series are significantly fairer than five-game series. Compares the results obtained from the models to actual playoff results. (MDH)

A collection of activities and tips for elementary teachers, culled from material the magazine has published over 20 years, includes cornerstones of classroom management, top teaching strategies, and curriculum classics. A new poster offers activities for commemorating student birthdays and for enjoying the first day of school. (SM)

The report "Workplace Basics: the Skills Employers Want" was based on interviews with hundreds of employers, who identified seven groups of desirable skills: reading, writing, and computation; listening and speaking; learning to learn, problem-solving and creative thinking; personal management; teamwork; and leadership and organizational…

In an instructional exercise at the University of Newcastle (Australia), social work students, staff, and organizations role-play in a simulated city to solve complex problems in a realistic but safe learning context. Experience suggests the extended simulation technique is effective. (MSE)

Presents one model for a liberal arts mathematics course that combines probability and calculus. Describes activities utilized in the course to heighten students' interest and encourage student involvement. Activities include use of visualization, take-home tests, group problem solving, research papers, and computer usage with DERIVE computer…

Presents a set of criteria for evaluating instructional programs intended to teach students to reason with economic concepts and principles. Develops evaluation criteria from recent information processing research on problem solving. Focuses on concepts that clarify how the thinking of experts and novices differs in a field like economics. (DK)

Discusses the use of autobiography and personal memoirs as teaching tools in the history classroom. Presents information from Henry Watterson's autobiography that discusses the life of Jane Cazneau. Points out flaws in which incorrect information is presented as true. Includes a complete lesson plan for use with the example. (DK)

Describes an experiment to determine which of four objects, hollow cylinders, solid cylinders, hollow balls, and solid balls, will reach the bottom of an inclined plane first when released simultaneously. Provides solutions to the problem and supplementary exercises. (MDH)

This study compares inservice (n=30) and preservice (n=30) earth and space science teachers on general mental abilities, content knowledge, Gagnean levels of content knowledge, and procedural knowledge in solving earth and space science problems. Results support Norman's theory of learning that inservice teachers function at the tuning mode of…

Presents study results showing that a range of modes of interactive organization coexist in expert-novice problem-solving activity and vary with the asymmetry of the relationships. Reports that by combining high achieving status with task-related expertise, the resulting interactive dynamic is guidance/tutoring. Argues for multidimensional…

Discussed is a method of approximating the roots of a quadratic that allows the discovery of relationships between parabolas and circles and between the use of geometry and algebra. Included are the procedure and justification of the method. (KR)

Discussed is the type of evidence children find to be convincing using either empirical or deductive methods to justify propositions which they consider to be true. Included are the problem, research design, and the conclusion. (KR)

Described is a computer software package suitable for teaching and research in the area of multicomponent vapor-liquid equilibrium. This program, which has a complete database, can accomplish phase-equilibrium calculations using various models and graph the results. (KR)