Overlap-based measures are increasingly applied in the synthesis of single-subject research. This article considers two criticisms of overlap-based metrics, specifically that they do not measure magnitude of effect and do not adequately correspond with visual analysis. It is argued that these criticisms are based on fundamental misconceptions…

Student mathematical errors are rarely random and often occur because students are applying procedures that they believe to be accurate. Traditional approaches often view such errors as indicators of students' failure to understand the construct in question, but some theorists view errors as opportunities for students to expand their mental model…

Following up on the educational reform initiatives of the 1990s and early 2000s, which are centered on the notion of accountability, Secretary of Education Arne Duncan's Race to the Top initiative strives to bring such accountability down to the level of the individual teacher through the use of advanced statistical parsing of student achievement…

The objective of this article is to contribute to the documented dearth of research on teachers' probabilistic knowledge. Prospective teachers of elementary school mathematics were asked to identify which result from five flips of a fair coin was least likely to occur. Participants, instead of being presented with sequences, were presented with…

A common argument against raising math course-taking requirements for all students is that it will cause more students to drop out of high school. But most students who drop out for academic reasons do so not because they are being "too challenged," but rather because they are not being challenged enough. It is important to raise the rigor and…

The term "real-world ID" is commonly heard at professional conferences, but its meaning is assumed rather than defined. Unless we examine the meanings and implications of rhetoric of the field, we risk error in presenting ourselves, and we risk derailing the progress of our profession. This article examines the term "real world" as applied to…

Within the discourse of language planning and policy, there is an increasing realisation of the strategic role of information and communication technologies in the promotion of indigenous African languages. The article discusses the strategic role that social software, in particular blogs and wiki, can and should play in the development of African…

This paper presents heuristic explanations of factor scores, structure coefficients, and communality coefficients. Common misconceptions regarding these topics are clarified. In addition, (a) the regression (b) Bartlett, (c) Anderson-Rubin, and (d) Thompson methods for calculating factor scores are reviewed. Syntax necessary to execute all four…

This study provides a snapshot of elementary school teachers' understanding of the mean and median. The research is presented in light of recent work regarding preservice teachers' understanding of the mean. Common misconceptions are identified which lead to potential implications for teacher preparation programs. One of the primary concerns…

Prior research on conceptual change has identified multiple kinds of misconceptions at different levels of representational complexity including false beliefs, flawed mental models, and incorrect ontological categories. We hypothesized that conceptual change of a mental model requires change in the "system of relations" between the features of the…

The purpose of this study was to investigate the effect of Process Oriented Guided Inquiry Learning (POGIL) method compared to traditional teaching method on 11th grade students' conceptual understanding of electrochemistry concepts. Participants were 115 students from a public school in Turkey. Nonequivalent control group design was used. Two…

Concept map activities often lack a subsequent revision step that facilitates knowledge integration. This study compares two collaborative critique activities using a Knowledge Integration Map (KIM), a form of concept map. Four classes of high school biology students (n?=?81) using an online inquiry-based learning unit on evolution were assigned…

This study investigated if and to what extent grade 8 and 9 students in Taiwan attributed materialistic properties to sound concepts, and whether they hold scientific views in parallel with materialistic views. Taiwanese middle school students are a special population since their scores in international academic comparison tests such as TIMSS and…

This article summarizes an investigation into how Flash-based cartoon video tutorials featuring molecular visualizations affect students' mental models of acetic acid and hydrochloric acid solutions and how the acids respond when tested for electrical conductance. Variation theory served as the theoretical framework for examining how students…

Objective: Several national organisations in the USA have recently developed educational materials that encourage substance use disorder treatment consumers to seek out approaches supported by scientific evidence in order to promote the use of "evidence-based practice" (EBP). This study aimed to explore how adolescents (young people aged…