Enzymes are nature's catalysts, mediating chemical processes in living systems. The study of enzyme function and mechanism includes defining the maximum catalytic rate and affinity for substrate/s (among other factors), referred to as enzyme kinetics. Enzyme kinetics is a staple of biochemistry curricula and other disciplines, from molecular and…

This interesting book discusses why, as an activity, topic and metaphor, play and game have become an integral part of modern life. Empirically exemplary and theoretically grounded, this book discusses the developments and expansions in gaming, from easily accessible casual games to the galaxy-spanning gaming worlds of Massively Multiplayer Online…

Virtual, mixed, and augmented reality, termed "extended reality," or XR, have great potential for classroom-based learning. Yet many questions about the use and widespread adoption of these emerging technologies remain. To share insights, opportunities, and challenges, the Joan Ganz Cooney Center at Sesame Workshop and the XR Association…

This book provides strategies, tools, and best practices for incorporating microlearning in English language teaching. It aims to help teachers create and deliver microlearning mechanisms that are optimized for mobile learning. This book also draws on relevant literature and the author's first-hand experience designing microlearning activities for…

About 45 R packages to analyze data using item response theory (IRT) have been developed over the last decade. This article introduces these 45 R packages with their descriptions and features. It also describes possible advanced IRT models using R packages, as well as dichotomous and polytomous IRT models, and R packages that contain applications…

This article aims to provide a theoretical framework for computerized adaptive tests (CAT) and item response theory models for polytomous items. Besides that, it aims to introduce the simulation and live CAT software to the related researchers. Computerized adaptive test algorithm, assumptions of item response theory models, nominal response…

The "Technology Outlook for Latin American Higher Education 2013-2018: An NMC Horizon Project Regional Analysis" was released as a collaborative effort between the New Media Consortium (NMC), the Centro Superior para la Enseñanza Virtual (CSEV), and Virtual Educa. This report -- published both in Spanish and English -- will inform…

Mediation is usually assessed by a regression-based or structural equation modeling (SEM) approach that we refer to as the classical approach. This approach relies on the assumption that there are no confounders that influence both the mediator, "M", and the outcome, "Y". This assumption holds if individuals are randomly…

Simulation researchers are sometimes faced with the need to use multiple statistical software packages in the process of conducting their research, potentially having to go between software packages manually. This can be a tedious and time-consuming process that generally motivates researchers to use fewer replications in their simulations than…

Research on the positive impact of using concrete manipulatives in mathematics for students with high-incidence disabilities is clear. Maccini and Gagnon (2000) considered manipulatives to be a best practice in terms of educating students with high-incidence disabilities in mathematics. It would follow, then, that research on virtual manipulatives…

Causal reasoning represents one of the most basic and important cognitive processes that underpin all higher-order activities, such as conceptual understanding and problem solving. Hume called causality the "cement of the universe" [Hume (1739/2000). Causal reasoning is required for making predictions, drawing implications and…

A theoretical four-mass model of the larynx was developed to simulate laryngeal biomechanical behavior and used to evaluate states of asymmetric laryngeal vibration. Simulations of laryngeal paralyses were compared with data on glottal vibration in observed laryngeal function. (Author/JDD)

Student departure from postsecondary institutions has been one of the central topics of concern discussed widely by policymakers, institutional personnel, and educational researchers at various levels. However, many existing studies have failed to address issues related to the timing of student departure from college. This article discusses the…

Describes the Pedagogical mode of instruction developed for the U.S. Army's Videodisc Interpersonal Skills Training and Assessment project, which utilizes standardized role playing simulation with immediate feedback after each decision point to teach leadership and counseling skills. Instructional features unique to interpersonal skills training…

This paper discusses the problem of feedback in hearing aids and offers examples based on a computer simulation of hearing aid behavior. The available technology for dealing with feedback is reviewed, and the new digital signal-processing approaches which may finally solve the feedback problem are described. (Author/DB)