Science is a wonderful subject to teach. Often characterised as "hard", it is a subject that has evolved constantly over the years by adopting new practices. In recent years, these have included many aspects of ICT, which was the starting point for the author and his team's project. The basic principles of the project were that: (1) subject…

This article presents an analysis of interactions in the usage, structure, cognition, coadaptation of conversational partners, and emergence of linguistic constructions. It focuses on second language development of English verb-argument constructions (VACs: VL, verb locative; VOL, verb object locative; VOO, ditransitive) with particular reference…

Although menstrual care is among the most important skill areas for females with mild to moderate developmental disabilities to facilitate their independence, there is limited research examining this issue. The present study was designed to analyze the acquisition and maintenance effects of antecedent prompt and test procedure on teaching changing…

This article proposes an extension of dominance analysis that allows researchers to determine the relative importance of predictors in logistic regression models. Criteria for choosing logistic regression R[superscript 2] analogues were determined and measures were selected that can be used to perform dominance analysis in logistic regression. A…

To find population proficiency distributions, a two-level hierarchical linear model may be applied to large-scale survey assessments such as the National Assessment of Educational Progress (NAEP). The model and parameter estimation are developed and a simulation was carried out to evaluate parameter recovery. Subsequently, both a hierarchical and…

In our previous two columns, we discussed the potential for using blogs and wikis with developmental education (DE) students. Another Web 2.0 technology, virtual environments like "Second Life", provides a virtual world where residents create avatars (three-dimensional [3-D] self-representations) and navigate around an online environment (Caverly,…

The performance of parameter estimates and standard errors in estimating F. Samejima's graded response model was examined across 324 conditions. Full information maximum likelihood (FIML) was compared with a 3-stage estimator for categorical item factor analysis (CIFA) when the unweighted least squares method was used in CIFA's third stage. CIFA…

We used discrete choice conjoint analysis to model the ways 645 children's mental health (CMH) professionals preferred to provide information to parents seeking CMH services. Participants completed 20 choice tasks presenting experimentally varied combinations of the study's 14 4-level CMH information transfer attributes. Latent class analysis…

The authors describe a collection of dynamic interactive simulations for teaching and learning most of the important ideas and techniques of introductory statistics and probability. The modules cover such topics as randomness, simulations of probability experiments such as coin flipping, dice rolling and general binomial experiments, a simulation…

The present study aimed at assessing perception of filtered speech that simulated different configurations of hearing loss. The simulation was done by filtering four equivalent lists of a monosyllabic test developed by Shivaprasad for Indian-English speakers. This was done using the Adobe Audition software. Thirty normal hearing participants in…

An educational model simulation of the sound produced by lightning in the sky has been employed to demonstrate realistic signatures of thunder and its connection to the particular structure of the lightning channel. Algorithms used in the past have been revisited and implemented, making use of current computer techniques. The basic properties of…

Single photons are used for fundamental quantum physics experiments as well as for applications. Originally being a topic of advance courses, such experiments are increasingly a subject of undergraduate courses. We provide interactive screen experiments (ISE) for supporting the work in a real laboratory, and for students who do not have access to…

In 2 Monte Carlo studies of fixed- and random-effects meta-analysis for correlations, A. P. Field (2001) ostensibly evaluated Hedges-Olkin-Vevea Fisher-[zeta] and Schmidt-Hunter Pearson-r estimators and tests in 120 conditions. Some authors have cited those results as evidence not to meta-analyze Fisher-[zeta] correlations, especially with…

This article describes a cooperative classroom robotics challenge named "IED Cleanup". This classroom challenge was created to incorporate a humanitarian project with the use of a robotics design system in order to remove simulated IEDs (Improvised Explosive Devices) to a detonation zone within a specified amount of time. Throughout the activity,…

Current literature points to the importance and benefits of extensive reading. Extensive reading provides contextualized clues for better reading comprehension (Krashen, 1982), and substantial linguistic input (Bell, 1998) needed for language development. Several studies have found a correlation between extensive reading and specific linguistic…