Presents an activity that introduces the historical developments in science that led to the discovery of the periodic table and lets students experience scientific discovery firsthand. Enables students to learn about patterns among the elements and experience how scientists analyze data to discover patterns and build models. (JRH)

Demonstrates a method of visual analysis which takes advantage of the pooling technique of topic-document set creation in the TREC collection. Describes the procedures used to create the initial visual fields, and their respective treatments as vectors without stemming and vectors with stemming; discusses results of these treatments and…

The method described permits visual analysis of information retrieval (IR) experiment results in classic control and treatment group protocols. It is an additional analysis technique for the evaluation of IR procedures that may be conducted within the rich terrain of human visual acuity, supported by two well-known statistical measures. (Contains…

Identifies five dimensions of professional instructional competencies based on qualitative empirical studies (participant observation, interviews, and data analysis). Discusses the concept of a "professional self" in order to explain professional development. Emphasizes self-reflection and observation as the means for professional educators to…

Describes the role of an instructional sequence and two accompanying computer-based tools in supporting students' developing understandings of statistical data analysis. Documents the emergence of the sociomathematical norm of what counts as a mathematical argument in the context of data analysis. (Author/MM)

Suggests that gender gaps that once existed with regard to computer access, use, and perceived expertise are narrowing significantly. Findings are based on survey data from 512 middle school students in three areas: self-perception of computer skills and their acquisition; exposure to technology at home and at school; and media style and content…

This sidebar points out that the field of library and information science is highly centrifugal and greatly in need of high-quality synthesis. Suggests that encouragement should be given to writers to handle existing claims, rather than gather new data, and that books should be written that organize whole segments of the field through some single…

Reports results of experiments examining credibility of meta-information. Information provided by organizations of varying levels of credibility was used in decision making tasks. Effects were examined when there (1) was ample time and (2) were severe time constraints. Results confirmed that both source credibility and time influenced decisions,…

In assessing information retrieval systems, it is important to compare the number of retrieved relevant items to the total number of relevant items. A variant of the statistical "capture-recapture" method can be used in large collections to estimate total number of relevant documents, providing the model supporting such an analysis can…

Investigates a mixed set of methods (group interviews, recollection of information needs and word association tests to collect data; content analysis and discourse analysis to analyze data) to evaluate whether these methods collected the data needed for work domain oriented thesaurus design. Findings showed the methods together provided domain…

Describes a research project designed to provide baseline data on the relationship between people's use of the public library and use of the Internet. A national survey was conducted to estimate the number of people using the library, the Internet, both, or neither, and to describe behaviors of people in each segment related to use or nonuse of…

Describes study of administrative data from Northern Ireland on the costs of family and child care services, using small area utilization modeling, to derive a new set of needs indicators that could be used within the family and child care capitation funding formula. Argues that small area utilization modeling produces a fairer and more equitable…

Examined feasibility of linking administrative data sets for evaluation of home visiting as a strategy for reducing incidence of child abuse and neglect. Also examined associations between family characteristics and subsequent child maltreatment. Found home visiting efforts were targeted to the populations most at-risk for child maltreatment.…

Discusses Edina School District's School Profiles composed of multiple indicators from student achievement assessment results, school demographic data, and survey responses. Focuses on student, staff, and parent surveys, and shows how the surveys were developed, presented, and used by the schools to support comprehensive and ongoing efforts to…

This case study of one elementary school describes an ongoing effort to close the gaps between literacy research and practice in order to promote the successful literacy transitions of all students. Jefferson Elementary School's reading program is a research-driven, school-wide program emphasizing prevention-based instruction, early…