At Boston College (Massachusetts), chemistry faculty are incorporating advanced technology into the classroom to motivate students to further study. A new $31 million chemistry center allows computer-based simulated experiments, computer-assisted instruction, and advanced graphics for visualization. Despite use of incentives, some student…

Presents low-cost learning activities to help teach elementary students about the earth's magnetic field. One project has students make a model of the earth's magnetic field. Another has them experiment with magnetism. (SM)

A method is suggested to estimate the relationship between a latent trait and one or more manifest predictors without estimating subject parameters. The method, developed for the Rasch model, can be generalized to two-parameter and three-parameter logistic latent trait models. The model is illustrated with simulated and empirical data. (SLD)

The polytomous unidimensional Rasch model with equidistant scoring (rating scale model) is extended so that two parameters are linearly decomposed into certain basic parameters. A conditional maximum likelihood estimation procedure and a likelihood ratio test are presented in the context of the extended model (linear rating scale model). (SLD)

Discusses the use of simulations in education and suggests ways in which they can be made more cost effective. Highlights include electronic performance support systems; smart tools; examples of the use of simulations in an electronics laboratory and for interpersonal problem-solving skills; and computer-aided instructional design. (Contains 11…

Describes computer software intended to help students understand the factors that determine their risk of HIV infection (ZWH)

Through Monte Carlo simulation, respective normative and intuitive strategies for covariation assessment and Bayesian inference are compared. Results indicate that better performance in both tasks results from considering alternative hypotheses, although not necessarily using a normative strategy. Conditions under which intuitive strategies may be…

A computer program that simulates the random evolution of a metabolic pathway is given. The program shows that natural selection preserves favorable traits if they occur in a specific sequence. (KR)

When repeated observations are taken at equal time intervals, a simple form of a stationary time series structure may be fitted to the observations. Use of correction factors is discussed. A computer simulation method is used to investigate power advantages of fitting a serial correlation pattern to repeated observations. (TJH)

Describes a prototype university, Southeast State University, which was created for a simulation game that uses an in-basket format to mix reality with role playing and case study to teach decision making, problem solving, and conflict resolution in higher education administration courses. (four references) (LRW)

Describes computer simulation programs that take elementary and secondary students exploring. One has students act as Magellan commanding his ship to reinforce history, geography, decision-making, and resource management skills. Another has students use problem-solving skills to venture across oceans and find trading routes to the Orient. (SM)

A graphic, interactive software program that is suitable for teaching students about the measurement and ion dependence of cell membrane potentials is described. The hardware requirements, the aim of the program, how to use the program, other related programs, and its advantages over traditional methods are included. (KR)

Six theme articles address computer-assisted design in landscaping, simulation in agricultural education, Macintosh's HyperCard, computer labs for agribusiness, and using a portable computer to evaluate classroom performance. (SK)

Item parameter estimation errors in test development are highlighted. The problem is illustrated with several simulated data sets, and a conservative solution is offered for addressing the problem in item response theory test development practice. Steps that reduce the problem of capitalizing on chance in item selections are suggested. (SLD)

Kids Development Corporation is a simulation of economic life appropriate for gifted students in grades 4-11, in which students form a corporation; purchase land; learn about building construction, banking, and investing; create a logo; and develop a community. This article describes the program's goals and objectives, schedule of activities, and…