This paper sits within the research on the affordances of new technologies in the mathematics classroom and focuses on a specific feature that is available in dynamic geometry environments, i.e. measuring tools, within the context of conjecturing and proving in open geometry problems. We develop a classification of different modalities of…

Teacher educators have suggested that mentoring has the potential to help novices learn to teach in reform-minded ways. This suggestion implies a change in the nature of mentor-novice relationships as conceptualized in the existing literature and an understanding of the complexities of mentoring relationships. Based on critical constructivist and…

Multiple samples of university students (N = 1,537) completed the Almost Perfect Scale-Revised (APS-R; R. B. Slaney, M. Mobley, J. Trippi, J. Ashby, & D. G. Johnson, 1996). Cluster analyses, cross-validated discriminant function analyses, and receiver operating characteristic curves for sensitivity and specificity of APS-R scores were used to…

The 10th International Conference on Educational Data Mining (EDM 2017) is held under the auspices of the International Educational Data Mining Society at the Optics Velley Kingdom Plaza Hotel, Wuhan, Hubei Province, in China. This years conference features two invited talks by: Dr. Jie Tang, Associate Professor with the Department of Computer…

The development of machine or computer applications for the arrangement, storage, retrieval, and display of literature references or classification schedules, vocabularies, and indexes used with the Universal Decimal Classification (UDC) System as an access point is reviewed. Activities of the Subcommittee on Mechanization of the UDC Central…

This paper presents a method for estimating the accuracy and consistency of classifications based on test scores. The scores can be produced by any scoring method, including the formation of a weighted composite. The estimates use data from a single form. The reliability of the score is used to estimate its effective test length in terms of…

Some of the different approaches to standard setting are discussed. Brief comments and references are offered concerning strategies that rely primarily on the use of expert judgment. Controversy surrounds methods that use expert judges, as well as those using test groups to set scores empirically. A minimax procedure developed by H. Huynh, an…

A study compared the newly developed Interpersonal Complexity Sort (ICS) with the widely used measure of cognitive differentiation, the Role Category Questionnaire (RCQ). Both measures were tested for relationships between the two measures and between each measure and previous associated impression structure dependent measures. Using a trait…

This study sought to determine whether categorizing information would increase students' ability to recall that information. Two recall tests, consisting of a list of 30 words in random order and a list of the same 30 words grouped into 6 categories, was developed and administered to 2 groups of 16 fourth- and fifth-grade students enrolled in a…

Many students find climate classification laborious and time-consuming, and through their lack of repetition fail to grasp the details of classification. This paper describes an expert system for climate classification that is being developed at Middle Tennessee State University. Topics include: (1) an introduction to the nature of classification,…

Presents an "infobase" version of "A Pilot Standard National Course Classification System for Secondary Education" to allow users to browse, search, annotate, print, and export information electronically. This publication is the culmination of a major effort to help establish common terminology, descriptions, and a coding…

This study focused on the robustness of unidimensional item response theory (UIRT) models in computerized classification testing against violation of the unidimensionality assumption. The study addressed whether UIRT models remain acceptable under various testing conditions and dimensionality strengths. Monte Carlo simulation techniques were used…

In the mid-1960s, social scientists Barney Glaser and Anselm Strauss developed grounded theory as a systematic and rigorous method of qualitative data analysis leading to "the discovery of theory from data." In grounded theory, the researcher applies a set of coding procedures to the data until a provisional theory emerges inductively.…

This paper examines whether the social science-based typology of Yvonne Lincoln and Egon Guba (1994), in which social science scholars are divided into positivist, postpositivist, critical, and constructivist paradigms based on ontological, epistemological, and methodological assumptions in the discipline, can be adapted to the academic discipline…

A discussion of Indo-European languages proposes that this language family is not genetically isolated but is distantly related to certain other language families of northern and central Eurasia, the Indian subcontinent, and the ancient Near East. The history of research into this macrofamily of languages, termed Nostratic, is reviewed, with notes…