Used a phenomenographic approach to reveal the qualitatively different ways in which 40 students in Hong Kong (China) primary and secondary schools experience and understand the phenomenon of graphic representations of quantitative data. Describes an outcome space depicting four variations of children's understanding. (Author/SLD)

This study investigated the possible activation of different types of model-based reasoning processes in two learning settings, and the influence of various terms of reasoning on the learners' problem representation development. Changes in 53 students' problem representations about genetic issue were analysed while they worked with different…

It is natural to study astronomy outdoors, but it is not quite as natural to study astronomy during the daytime. This lesson uses the Earth's closest star as a subject of study within the schoolyard. The importance of the rising sun is combined with hands-on inquiry in which students explore the properties of shadows. Students (a) complete a…

Four groups (three engineering students in each group) were videotaped while constructing concept maps in Linear Algebra. There are two aims of this study. The first is to characterize the discourse in the groups by addressing the following research questions: Do the students communicate in an "effective" way? Do the students'…

L. L. Thurstone's (1927) model provides a powerful framework for modeling individual differences in choice behavior. An overview of Thurstonian models for comparative data is provided, including the classical Case V and Case III models as well as more general choice models with unrestricted and factor-analytic covariance structures. A flow chart…

Colleges and universities typically record student achievement through a system of number and grades. This system of documenting student learning is based on the assumption that students progressively carry with them and build on their learning as they advance through courses. However, learning is more than an aggregation of courses and credits.…

Understanding the distribution of achievement levels of students' performance on the National Assessment of Educational Progress (NAEP) is aided through the use of the trilinear chart. This chart is described and its use illustrated with data from the 1992 state NAEP mathematics assessment. The trilinear chart is used to portray three variables…

The advantages and disadvantages of new software for market segmentation analysis are discussed, and the application of this new, chi-square based procedure (CHAID), is illustrated. A comparison is presented of an earlier, binary segmentation technique (THAID) and a multiple discriminant analysis. It is suggested that CHAID is superior to earlier…

Flowcharting of algorithmic procedures can be a useful tool for teachers of remedial arithmetic. (SD)

A system study of the textbook ordering department is presented including systems flow chart, chart of activities, and description of operations and procedures for utilizing the computer system. Changes based on the study are noted. (JT)

Upper-level secondary students investigated square and triangular numbers and Pythagorean triples using computers. (SD)

Presents a description of the computer simulation model developed by the National Educational Finance Project for use by States in planning and evaluating alternative approaches for State support programs. Provides a general introduction to the model, a program operation overview, a sample run, and some conclusions. (Author/WM)

Describes the classroom management of an individualized program in English as a second language currently in operation at Washington Irving Educational Center in Schenectady, New York. Included in the article are three charts: the floorplan of the classroom, a sample progress chart, and a daily record chart. (PMP)

This kit is based on a review of the organization charts of 86 member libraries of the Association of Research Libraries (ARL) gathered in spring 1986, compared with two earlier sets of charts published in 1973 and 1977, and contains charts of 61 of the libraries. Nearly one-fourth of the charts studied are under revision, indicating that changes…