The central messages of this paper are that (a) unequal variances may be more prevalent than typically imagined in educational and policy research, and (b) when considering tests of equal variances one needs to be cautious about what is being referred to as "Levene's test" because Levene's test is actually a family of techniques. Depending on…

Reviews three software packages: (1) "The Weather Machine Courseware Kit" for grades 7-12; (2) "Exploring Measurement, Time, and Money--Level I," for primary level mathematics; and (3) "Professor DOS with SmartGuide for DOS" providing an extensive tutorial covering DOS 2.1 to 4.0. Discusses the strengths and…

A general latent variable model allows for maximum likelihood estimation with missing data. LISREL and LISCOMP programs may be used to carry out this estimation. Simulated data were generated. The proposed Full, Quasi-Likelihood estimator was found to be superior to listwise present quasi-likelihood and pairwise present approaches. (Author/GDC)

Presents a connectionist approach to modeling that relies on neural networks to control conventional simulations of multimedia clinical patient simulations. These neural networks simplify the medical expert's task of validating and maintaining patient simulations with diagnostic capabilities and serves as the basis of clinical decision support…

The motion of a magnet through a coil is analysed through a model of magnetic monopoles. The magnetic flux of a monopole passing through a loop is explained and also its rate of change. By a superposition of voltages produced by the monopoles on the coils the shape of the voltage versus time graph is explained. Also examined is the interaction of…

The authors have created a software system called the CAVEman, for the visual integration and exploration of heterogeneous anatomical and biomedical data. The CAVEman can be applied for both education and research tasks. The main component of the system is a three-dimensional digital atlas of the adult male human anatomy, structured according to…

Current reforms in science education call for the integration of digital technologies into science teaching, advocating that students learn science content and processes through technology. In this article, we provide practical examples, situated within the literature, of how digital technologies can be used to support the development and…

In this paper, we present the results of an exploratory study into the relationship between student self-efficacy and guidance use in a Multi-User Virtual Environment (MUVE) science curriculum project. We describe findings from a sample of middle school science students on the combined impact on learning of student self-efficacy in scientific…

The objective of this study was to evaluate the effect of a dynamic software simulation on the understanding of the kinetic molecular theory by 7th graders. Students in the control group (n = 62) studied a curricular unit that addressed the differences in arrangement and motion of molecules in the three phases of matter. The experimental group (n…

Simulation-based educational products are excellent set of illustrative tools that proffer features like visualization of the dynamic behavior of a real system, etc. Such products have great efficacy in education and are known to be one of the first-rate student centered learning methodologies. These products allow students to practice skills such…

The article presents a brief overview of the Neighbourhood Game Design Project, a studio-based curriculum intervention aimed at engaging students in the design of place-based mobile games and interactive stories using geo-locative technologies (for example, GPS enabled cell phones). It describes the three curricular components that defined the…

This study investigated novel pedagogies for helping teachers infuse inquiry into a standards-based science curriculum. Using a multi-user virtual environment (MUVE) as a pedagogical vehicle, teams of middle-school students collaboratively solved problems around disease in a virtual town called River City. The students interacted with "avatars" of…

Reviews five Apple II computer programs: (1) The Research Companion: Supreme Court Decisions, grades 9-12; (2) Rebus Writer--vocabulary, problem solving, wordplay, grades 3-12; (3) Playing with Science: Temperature--MBL for grades K-7; (4) Exploring Science: Temperature--MBL for grades 6-12; and (5) ShowOff--graphics, desktop presentations for…

Describes a HyperCard-based simulation/tutorial for the Macintosh that is designed to teach users to search the Medline CD-ROM database on an IBM microcomputer. Results of a user survey are reported, and the potential of HyperCard for bibliographic instruction, including the use of the tutorial to develop transparencies, is discussed. (MES)

Students perform intensive web-based applications during their education. One of these is project-based application. In this study, the effect of web based project applications on students' attitudes towards chemistry has been investigated. 42 students attending Hacettepe University, Faculty of Education, and Department of Chemistry Education have…