The goal of the present study was to examine the mechanisms underlying a strategy that we developed to make instructional explanations effective. In two experiments participants learned about plate tectonics from a multimedia material, including adjunct explanations that revised common misunderstandings. These explanations were either marked…

We report on a concept inventory for special relativity: the development process, data analysis methods, and results from an introductory relativity class. The Relativity Concept Inventory tests understanding of relativistic concepts. An unusual feature is confidence testing for each question. This can provide additional information; for example,…

As beginning teachers start to recognize the complexity of teaching mathematics in elementary school classrooms and how their new vision for teaching mathematics creates new challenges, they experience discomfort--a healthy awareness that much is to be learned. Brousseau (1997) notes that changes in the roles that are implicitly assigned to the…

The purpose of this study was to examine meanings of play among children. Thirty-eight students aged 7-9 years from a suburban public school in Western Canada participated in focus groups. Data analysis revealed participants saw almost anything as an opportunity for play and would play almost anywhere with anyone. However, they perceived parents…

Instructors ("N"?=?204) of elementary mathematics methods courses completed a survey assessing the extent to which they value cognitive research and incorporate it into their courses. Instructors' responses indicated that they view cognitive research to be fairly important for mathematics education, particularly studies of domain-specific topics,…

College students often come to the study of evolutionary biology with many misconceptions of how the processes of natural selection and speciation occur. How to relinquish these misconceptions with learners is a question that many educators face in introductory biology courses. Constructivism as a theoretical framework has become an accepted and…

With increasing numbers of students with invisible disabilities attending college and university, faculty and staff find themselves faced with new challenges. This practical handbook provides lecturers, tutors, disability services, and administrative staff with an overview of the invisible disabilities they may encounter, dispelling common myths…

Student perceptions of science-oriented careers and scientists have been shown to be largely inaccurate. Through an instructional design and development process we have developed a method for offering students more accurate information about science-oriented careers. This paper follows the steps involved in developing a volume of…

This article reports on a study of student music teachers' learning experiences whilst practising their teaching skills in a community music project in a Palestinian refugee camp in Lebanon. I will be discussing findings that relate those experiences to the student teachers' competence development as professional music teachers. In 2010, there…

Many students confuse the standard deviation and standard error of the mean and are unsure which, if either, to use in presenting data. In this article, we endeavour to address these questions and cover some related ambiguities about these quantities.

Due to its extensive applicability and computational ease, moderated multiple regression (MMR) has been widely employed to analyze interaction effects between 2 continuous predictor variables. Accordingly, considerable attention has been drawn toward the supposed multicollinearity problem between predictor variables and their cross-product term.…

Previous empirical studies using multiple-choice procedures have suggested that there are misconceptions about the scale of astronomical distances. The present study provides a quantitative estimate of the nature of this misconception among US university students by asking them, in an open-ended response format, to make estimates of the distances…

John Dewey lived and worked in an environment where the manual training movement was ever-present. For Dewey his own unique version of manual training is labeled occupations. Nevertheless, over the years what Dewey meant by occupations has been either misinterpreted or ignored for a plethora of reasons. This manual training climate that Dewey was…

On the basis of the statistical concept of waiting time and on computer simulations of the "probabilities of nonoccurrence" (p. 457) for random sequences, Hahn and Warren (2009) proposed that given people's experience of a finite data stream from the environment, the gambler's fallacy is not as gross an error as it might seem. We deal with two…

In this issue of the Occasional Paper Series describes practices and policies that impact the early schooling of children of immigrants in the United States. The authors consider the intersectionality of young children's lives and what needs to change in order to ensure that race, class, immigration status, gender, and dis/ability can effectively…