Error analysis consumes much of the focus in introductory physics labs. Catastrophic cancellation is a spike in error that occurs when subtracting two measurements of roughly equal magnitude. Often termed "loss of significance" or "subtractive cancellation," this effect can easily relegate experimental results to utter…

When the relationship between two physical variables, such as voltage and current, can be expressed as y = bx where b is a constant. b may be estimated by least squares, or by averaging the values of b obtained for each x-y data pair. We show for data gathered in an experiment, as well as through Monte Carlo simulation and mathematical analysis,…

Recently, Nissen et al. argued in this journal for the use of Cohen's d, in place of the more commonly used normalized gain, in the analysis of preinstruction and postinstruction scores on concept inventories used to measure the effectiveness of instruction. Their reason for advocating such a change is that they say normalized gains are…

The study aimed at detecting the level of reflective teaching practices used by science teachers in classrooms. It sought to examine the potential alteration of these practices in terms of some variables, namely gender, qualification, experience, and load. The population consisted of all science teachers of physics, chemistry, and biology in the…

Light rays refract when passing through pockets of transparent fluids with different indices of refraction such as ordinary air pockets of varying temperature. This phenomenon makes night stars twinkle, distorts views above hot asphalt roads and hot barbeque grills, and provides an opportunity for visualizing the normally invisible movement of…

The topic of atomic spectra is part of university and secondary school curricula around the world. Relatively little research, however, has been done on the learning and teaching of this subject, despite the fact that it forms a foundation for advanced study in quantum mechanics, astronomy, and astrophysics. A systematic investigation into student…

Powerbanks differ in the amount of energy they can store. Usually this capacity (in a colloquial sense) of the powerbanks is stated in the form of charge in mAh for effective advertising. From a physical point of view, shouldn't the energy that a powerbank can provide be of interest? For students, charging smartphones with power banks is…

A workshop using dance to introduce particle physics concepts to young children is presented. The workshop is realised in the dance studio, the children assume complete ownership of the activity and dance becomes the means to express ideas. The embodiement of the physics concepts facilitates knowledge assimilation, while empowering the students…

This article showcases how a Wi-Fi based LED light system that flickers to indicate probability of auroral manifestation became a beacon of inquiry, interest, and critical thinking amongst preservice teachers, staff, and passersby in a teacher education program. Beyond articulating the design phase of the system, highlighted here are the three…

A vacuum cleaner is used to isolate over twelve harmonics in a corrugated toy whistling tube. The toy tube is first taped along a horizontal surface. Then a vacuum cleaner with a hose diameter approximately the same as that for the toy tube is turned on. As the vacuum cleaner hose approaches one end of the corrugated tube, individual higher…

This book promotes the effective implementation and development of critical analysis in physics. It focuses on explanatory texts concerning subjects typically dealt with in secondary or higher education and addressed in an academic or popular context. It highlights the general difficulties and obstacles inherent in teaching physics and shows how…

Starting in middle school, mathematics plays a crucial role in understanding scientific concepts (Roschelle et al. 2007), and a rigorous understanding of the mathematics embedded in different topics in science provides students with the platform to prepare them for future Science, Technology, Engineering and Mathematics (STEM) careers. To help…

The ability to predict students' ideas or performances is commonly recognized as an indicator to measure teachers' knowledge of student learning difficulties. This research focuses on identifying pre-service science teachers' knowledge of student learning difficulties on Mechanics, as well as comparing pre-service science teachers' predictions to…

In a detailed exploration of inclusion in physics, social scientist Maria Ong makes the case for far-reaching higher education reform, noting that despite diversity efforts to recruit more women and students of color into science and mathematics programs, many leave the STEM pipeline. "The Double Bind in Physics Education" takes readers…

This study explores the role of unconventional forms of classroom assessments in expanding minoritized students' opportunities to learn (OTL) in high school physics classrooms. In this research + practice partnership project, high school physics teachers and researchers co-designed a unit about momentum to expand minoritized students' meaningful…