The problem associated with validating an admissions test when such validation is based solely on the scores of the accepted, and therefore, restricted, group of applicants is demonstrated. A correction formula that estimates the correlation between admission test scores and a subsequent measure of performance for the entire group of applicants is…

Analysis of the income-contingent repayment mechanism of the federal direct lending program suggests that it will be considerably more expensive than other repayment options in total interest costs for many; lead to hefty tax liabilities for some; be administratively cumbersome, vulnerable to fraud and abuse, and costly to taxpayers; and invite…

Listed are three activities that illustrate using a spreadsheet as a problem-solving tool and for developing an understanding of relationships between variables. Each activity includes objective, procedure, example spreadsheet, and extra challenges. (KR)

Illustrates the reasons of formulas on geometric concepts, including length, area, volume, and angles. Provides diagrams of geometric constructions with related formulas. (YP)

Provides a program listing in True BASIC which constructs several kinds of matrices: (1) matrices with integral entries that have inverses that have integral entries; (2) matrices with integral entries that have inverses that are rational numbers with reasonable denominators; and (3) matrices with integral entries and prescribed integer…

Presents an example using a computer to illustrate concepts graphically in an introductory course on differential equations. Discusses the algorithms of the computer program displaying the solutions to an equation and the inclination field of the equation. (YP)

Studies the simple dynamical system of the pendulum and the chaotic behavior that occurs when the pendulum is both damped and driven. Provides an algorithm and BASIC program for the numerical solution to the differential equations encountered in the discussion. (MDH)

Presents a simple mathematical model in which resultant speed is the sum or difference between wind speed and runner speed and a more complex model that assumes that only a proportion of the wind's speed affects one's running speed to describe the time difference between running with and without wind. (MDH)

Presents an activity in which students construct model hot air balloons to introduce the concepts of convection current, the principles of Charles' gas law, and three-dimensional geometric shapes. Provides construction and launching instructions. (MDH)

Background: Bullying is a problem in schools in many countries. There would be a benefit in the availability of a psychometrically sound instrument for its measurement, for use by teachers and researchers. The Olweus Bully/Victim Questionnaire has been used in a number of studies but comprehensive evidence on its validity is not available. Aims:…

This updated reprint of a classic work presents design analysis of geometric patterns and information helpful to constructing mathematical drawings of industrial and achitectural features. Both simple and complex designs are given. Problems combine both algebra and geometry. The work is divided into six chapters which are further divided into…

Kanawha County (West Virginia) schools use Z-scores to identify elementary students eligible for Chapter 1 services in reading and mathematics. A probit analysis of over 500 previously served students was used to determine the variables and weights in the Z-score equations. Independent variables were chosen from those commonly used to identify…

In an effort to measure the economic impact of Dutchess Community College (DCC), in Poughkeepsie, New York, on Dutchess County, a study was undertaken of expenditures and jobs created in the county during fiscal year 1991-92. To measure the tangible economic impact, three major financial components were examined: direct expenditures by the college…

This manual identifies a series of performance measurements which, when assessed in their totality, can effectively measure a public library's level of service to its users. The measures have been developed at two levels. On one level, the measures can broadly evaluate the overall performance of library systems on the national level; on a second,…

This report puts forth the position of the Office of the Chancellor of the California State University (CSU) regarding data needs for constructing California Community College (CCC) transfer rates, indicating that the CSU's preferred transfer rate would indicate the annual incidence of new transfers, convey efficiency across time, and, in…