Purpose: This research aims to examine the pre-service teachers' learning when using STEM tasks with middle school students in a lesson study. Design/methodology/approach: This research adopted a qualitative methodology with an interpretative orientation. The participants are three pre-service teachers involved in a lesson study that took place in…

The rapid development of technology in the Industrial Revolution 4.0 has made it necessary for students to master technology and have data literacy and technology literacy skills. However, initial studies show that the data and technology literacy of grade XI high school students is still relatively low. This study aimed to investigate the…

Virtual Reality (VR) technology in learning activities assists in visualizing abstract phenomena of physics concepts. This technology supports the delivery of effective and meaningful learning experiences. The main objectives of this study, therefore, are to analyze the level of students' readiness to use VR technology in higher education, and to…

In 2017, the University of Utah experienced a tragedy that accelerated already proposed changes to the physics and astronomy graduate program. This article outlines the changes made to the graduate program and discusses students' experiences with the early implementation of the new policies. In-depth, open-ended interviews were conducted with…

Here is presented an interesting problem that can be used to introduce students to a variety of physics topics including non-inertial frames and frictional forces, rotational dynamics, and damped oscillations; the normal force also appears, but not in its usual guises. The problem is a generalized version of problem 3.34 presented in the…

A good paradox has the viewer confused, but the best paradoxes lead the viewer to try to understand what is happening. One of the author's favorites is the hydrostatic paradox, in which a short and slender column of water supports a relatively enormous weight. He describes the paradox using an illustration of a student who weighs 60 points stands…

Objective: This investigation addresses the loudness variations in sones achievable with spectral slope variations (higher harmonic energy) in human vocalization and compares it to the sound pressure level (SPL) variations typically reported in the voice range profile (VRP). Method: The primary methodology was computational. The ISO standard 226…

It has now been over 100 years since Heinrich Barkhausen published his description of a crackling sound heard when a piece of iron is magnetized inside of a coil wired to a set of headphones, and this phenomenon provided evidence for the theory of magnetic domains. Traditionally, this effect is performed as a demonstration by connecting the coil…

An individual harmonic wave (i.e., having a single frequency and wavelength over all time and space) traveling in a loss-free medium has a single constant speed, which is equal to the magnitude of the phase velocity of the wave. However, when a set of different harmonic waves are traveling in the same direction, they interfere to form wave…

In recent years, there have been a number of articles published concerning whether or not potential energy ("PE") as defined in mechanics is invariant under Galilean transformation. This essay addresses that issue in a different, more fundamental and elegant way than has been done thus far. It recognizes that a considerable change in the…

Ideas about social justice are influenced by the ontological and epistemological assumptions of the worldview in which they are located. Since the seventeenth century, the dominant worldview in the western hemisphere has been shaped by the separatist and deterministic principles of classical Newtonian science. During the twentieth century, with…

This article analyzes and experimentally verifies the stability behavior of the equilibrium states of a conical pendulum. An analysis of the motion presents that the equilibrium states of the pendulum are determined by the pendulum angular speed. For a given pendulum length there exists a critical angular speed that determines stability…

Points near the top end of a falling rod hinged at its bottom end can fall faster than g. If a rod falls on a frictionless surface then the bottom end slides backwards and the centre of mass falls vertically with acceleration less than g. The effect was simulated by mounting a rod on wheels and filming the result with a video camera. The…

If a smooth ball is dropped vertically without spin on a smooth horizontal surface then one might expect the ball to bounce vertically without spin. If it does not then the centre of mass of the ball does not coincide with its geometric centre. An experiment is described where a billiard ball and a superball are deliberately biassed by adding a…

An a-posteriori multicentre reliability study was conducted to compare the reliability and magnitude of the maximum power (P[subscript max]) and optimal velocity (V[subscript opt]) between the force-power-velocity relationships during the leg cycle-ergometer and bench press throw exercises. The force-power-velocity relationships were determined in…