This study presents a characterization of prospective early childhood teachers' (ECEPTs) and prospective elementary school mathematics teachers' (EMEPTs) concept images and concept definitions of triangles through a defining task and an example generation task. Data consisted of 62 EMEPTs' and 72 ECEPTs' written statements for the definition of a…

This article draws greater attention to the use of language as a pedagogical tool in science teaching and learning. Evidence shows that Alexander's (2020) 'dialogic teaching' approach is significant in promoting learning in science when used interchangeably with authoritative patterns of talk. This article explores dialogic teaching, drawing on…

Catalysis is not only one of the most crucial principles of Green Chemistry but also one of the most used industrial strategies to improve yields and to shift to more environmental-friendly processes. Due to the great importance of catalysis, we propose a laboratory activity related to heterogeneous catalysis courses (upper and undergraduate…

Crosscutting concepts (CCCs) are superordinate in the scientific concept system, common across disciplines, and very abstract. These characteristics, with the addition of incoherence in their curricular presentation, can challenge instructors. We designed a modular course based on coherence and conceptual understanding. The course structure was…

In the initial sociocultural theory (SCT) timeline, Lantolf and Beckett (2009) surveyed a broad spectrum of research informed by sociocultural psychology as it was extended into the field of second language acquisition and language teaching. Since that time, the amount of research that has been published within the SCT framework has grown…

Adolescent and children's concepts of multiplication and fractions have been linked to differences in the number of levels of units they coordinate. In this paper, we discuss relationships between adult students' conceptual structures for coordinating units and their pre-calculus understandings. We conducted interviews and calculus readiness…

This paper provides seven topics on sodium hydrogen carbonate (NaHCO[subscript 3]) and its ions for readers looking for familiar material phenomena to strengthen students' understanding of the chemical concepts of thermodynamics. The first concept is the ideal gas law, followed by the van't Hoff equation, Gibbs energy, pH change, chemical…

Introductory chemistry textbooks often present valence bond (VB) theory as useful, but incorrect and inferior to molecular orbital (MO) theory, citing the electronic structure of O[subscript 2] and electron delocalization as evidence. Even texts that initially present the two theories on equal footing use language that biases students toward the…

In this paper, we discuss the role of dialogue in two layers; first, in relation to two self-organised communities of science teachers in which we participated and, second, our process of coming together during our PhDs to analyse these communities, a dialogue about the dialogue. Regarding the first layer, there is much to learn from science…

Negation is known to have inhibitory consequences for the information under its scope. However, how it produces such effects remains poorly understood. Recently, it has been proposed that negation processing might be implemented at the neural level by the recruitment of inhibitory and cognitive control mechanisms. On this line, this manuscript…

Experimental results are presented on the collision of a superball with two different wood blocks. The results are in reasonable agreement with a simple collision model where kinetic energy is conserved, but better agreement is obtained if a small loss of kinetic energy is assumed, as observed. The physics is slightly more complicated than the…

When, how, and why students use conceptual knowledge during math problem solving is not well understood. We propose that when solving routine problems, students are more likely to recruit conceptual knowledge if their procedural knowledge is weak than if it is strong, and that in this context, metacognitive processes, specifically feelings of…

The aim of the present study is to determine the elementary pre-service mathematics teachers' understanding on solids. For this purpose, pre-service teachers' definitions and drawings of these objects were examined. Qualitative research method was used. A written questionnaire consisting of sixteen open-ended and multiple-choice questions was…

Background: Accreditation organizations broadened program assessment criteria in ways that present challenges for the evaluation of learning outcomes. This is especially the case in courses where there are not narrowly defined questions or definitive solutions, such as engineering ethics. While protocols for learning assessment exist, there is…

Background/Context: Over the last two decades, policymakers' standards-based accountability reforms in the United States have fundamentally changed public schooling in general and kindergarten specifically. As this has occurred, little has been learned about how the children themselves make sense of these changes in schooling.…