Thermal cameras offer real-time visual access to otherwise invisible thermal phenomena, which are conceptually demanding for learners during traditional teaching. We present three studies of students' conduction of laboratory activities that employ thermal cameras to teach challenging thermal concepts in grades 4, 7 and 10-12. Visualization of…

The content knowledge of teachers matters in the classroom. It influences their ability to deliver lessons, select activities for their students and assess students' learning. This study investigates the experiences of biology pre-service teachers who were required to teach physics and earth science concepts during their pre-service teaching. Such…

This action research study investigated the impact of teaching physics using a disciplinary literacy framework for instruction across all units in one academic year. Through a suite of vocabulary strategies and lessons that encourage students to write, speak, draw, mathematically translate, and design experiments, students learn to do physics by…

Physics bachelor's degree production has more than doubled since the recent low in 1999 and total enrollments in US undergraduate physics programs continue to increase. The all-time high of 7,526 bachelor's degrees in the class of 2014 represents the 15th consecutive year that the number of physics bachelor's conferred has increased. First-year…

We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin…

The notion of entropic forces often stays mysterious to students, especially to ones coming from outside physics. Although thermodynamics works perfectly in all cases when the notion of entropic force is used, no effort is typically made to explain the mechanical nature of the forces. In this paper we discuss the nature of entropic forces as…

The pumping mechanism of a swing in a playground is due to the exchange of angular momentum from the rocking movement of the swinger to the swing oscillation around the point from which the swing is suspended. We describe the rocking events as square pulses of short duration. This choice, together with a simplified mechanical model for the…

We study the hydrogen atom confined to a spherical box with impenetrable walls but, unlike earlier pedagogical articles on the subject, we assume that the nucleus also moves. We obtain the ground-state energy approximately by means of first-order perturbation theory and show that it is greater than that for the case in which the nucleus is clamped…

Much effort over many years has been devoted to the reform of the teaching of physics. This has led to many new and imaginative approaches in the content and delivery of material. Great strides have been made in the delivery, and the content has been continually supplemented. However, attempts to modernize the basic structure of the presentation…

This study examined Kwara State secondary school science teachers' perception of [information and communications technology] ICT for instruction based on their area of specialization. Participants were 630 science teachers of Biology, Chemistry, Physics and Mathematics from both public and private senior secondary schools in 12 Local Government…

This article presents the results of an analysis of three Slovenian textbooks for high school physics, from the point of view of simplifications and idealizations in the field of mechanics. In modeling of physical systems, making simplifications and idealizations is important, since one ignores minor effects and focuses on the most important…

Constructed-response (CR) questions are a mainstay of introductory physics textbooks and exams. However, because of the time, cost, and scoring reliability constraints associated with this format, CR questions are being increasingly replaced by multiple-choice (MC) questions in formal exams. The integrated testlet (IT) is a recently developed…

Density functional theory (DFT) is a type of electronic structure calculation that has rapidly gained popularity. In this article, we provide a step-by-step demonstration of a DFT calculation by hand on the helium atom using Slater's X-Alpha exchange functional on a single Gaussian-type orbital to represent the atomic wave function. This DFT…

In this work we investigate the place and the importance of environmental education (EE) in Moroccan high school education with a focus on Physics/Chemistry and Biology/Geology classes. It is performed within a comparative method by using an interdisciplinary approach in order to understand the presence and the pedagogical styles adopted for the…

A suitable way for teachers to present science content and foster creativity in less academically inclined students is by getting them to engage in design-based science activities and guiding them along the way. This study illustrates how a design-and-make activity was carried out with the aim of getting students to showcase their creativity while…