Discussion of the use of interactive videodisc in teacher education focuses on a study of elementary education teacher students that investigated the effects of interactive video on learning concepts of cooperative learning. Treatment of experimental and control groups is described, and a model for using videodisc in teacher education is…

Discussed is the place and teaching of trigonometry in a NCTM Standards-based mathematics curriculum. Presented is how these standards can be implemented in a technology-rich environment that encourages reasoning, communication, problem solving, and confidence building. Examples focus on functions, graphical sense, modeling, and identities. (KR)

The political reforms taking place in South Africa are reflected in new thoughts on possible future language policies for the country. The background to the present debate is traced, and some of the most important suggestions for a language policy for a postapartheid South Africa are discussed. (78 references) (VWL)

Concrete experience should be a first step in the development of new abstract concepts and their symbolization. Presents concrete activities based on Hyde and Nelson's work with egg cartons and Steiner's work with money to develop students' understanding of partitive division when using fractions. (MDH)

Validity evidence for a new instrument, the Situation-Response Measure of Achievement Motivation for analyzing cross-situational consistency of achievement-related behavior, is presented in a study of 246 college students. Exploratory factor analysis indicates the presence of two factors, striving and apprehensiveness. (SLD)

The effectiveness of alternative procedures to correct for rater leniency/stringency effects was studied when true scores were known. Ordinary least squares, weighted least squares, and imputation of the missing data consistently outperformed averaging the observed ratings; and the imputation technique was superior to the least squares methods.…

The need for scale linking in the National Assessment of Educational Progress (NAEP) is discussed, and the specific procedures used to carry out the linking in the context of the major analyses of the 1990 NAEP mathematics assessment are described. Issues remaining to be addressed are outlined. (SLD)

Articles in this special issue use survey data to provide policymakers with validated indirect needs assessment models that will help them obtain information about populations requiring different levels and types of mental health services. The articles provide the basis for predictive needs assessment and explanatory models of resource allocation.…

Results of empirical validation studies of six statistical models available for indirectly estimating the need for alcohol, drug abuse, and mental health services across a large geographic area are presented. Models were evaluated using Colorado Social Health Survey data for 4,745 adults from 48 subareas of Colorado. (SLD)

Comments on specific points raised by E. W. Eisner, F. Erickson, and T. S. Popkewitz. Argues that the author's previous article does not support methodological monism. It is an assertion that some version of educational trial (clinical trial metaphor) is required to evaluate the usefulness of educational research. (SLD)

Describes a qualitative study that explores students' perceptions of their own learning. Document review, participant observation, and open-ended interviews were used to gather and triangulate data. Factors that were perceived as helpful were woven into a theoretical model. The uses of the model are discussed. (Author/KR)

A nonparametric multicategorical model for multiple-choice data is proposed as an extension of the binary spline model of J. O. Ramsay and M. Abrahamowicz (1989). Results of two Monte Carlo studies illustrate the model, which approximates probability functions by rational splines. (SLD)

A method for analyzing test-item responses is proposed to examine differential item functioning (DIF) in multiple-choice items within the latent class framework. Different models for detection of DIF are formulated, defining the subgroup as a latent variable. An efficient estimation method is described and illustrated. (SLD)

Discusses U.S. technology policy and the transfer of scientific and technical information (STI). Results of a study of knowledge diffusion in the aerospace industry are reported, including data on aerospace information intermediaries, use of computer and information technologies, and the use of NASA (National Aeronautics and Space Administration)…

Discusses the state of education, social problems, and child welfare. Urges teachers to press government representatives to better the lives of children in the United States by allotting more funds for education, health care, and the fight against poverty. Argues that children need teachers who have faith and confidence in their students. (DK)