This paper describes three methods of measuring the coefficient of restitution (CoR) for two different types of ball-on-ball collision. The first collision type (for which two different CoR measurement procedures are described) is a static, hanging steel ball forming part of a Newton's cradle arrangement, which is then hit by its adjacent…

On entry to university, high-achieving physics students from all across Australia struggle to identify Newton's third law force pairs. In particular, less than one in ten can correctly identify the Newton's third law reaction pair to the weight of (gravitational force acting on) an object. Most students incorrectly identify the normal force on the…

We live in challenging times. The divisions among people related to race, gender, gender identity, religion, and socioeconomic class are becoming more apparent. Past efforts toward social justice and the dismantling of these divisions seem to be losing their momentum and are even negated. As kinesiologists, we each need to commit to standing for…

This paper presents item-analysis data to illustrate how to identify a set of internally consistent test items that differentiate or discriminate among examinees who are highly proficient and nonproficient on the construct of interest. Suggestions for analyzing the quality of test items are offered as well as a pedagogical approach to augment the…

A simple experiment is described to measure the coefficient of rolling friction for a low bounce ball rolling on a horizontal surface. As observed previously by others, the coefficient increased with rolling speed. The energy loss due to rolling friction can be explained in terms of the measured coefficient of restitution for the ball, meaning…

In a usual modern physics class the Compton effect is used as the pedagogical model for introducing relativity into quantum effects. The shift in photon wavelengths is usually introduced and derived using special relativity. Indeed, this works well for explaining the effect. However, in the senior author's class one of the student coauthors…

Since the establishment and development of translation and interpreting discipline in universities around the world, interpreting contests are held to (1) raise wild interests in interpreting activities; (2) promote interpreting training programs and interpreting pedagogy research; and (3) enhance individual's language proficiency and interpreting…

A foundation-level course is described that integrates material related to reactivity in organic, inorganic, and biochemistry. Designed for second-year students, the course serves majors in chemistry, biochemistry, and biology, as well as prehealth-professions students. Building on an earlier course that developed concepts of nucleophiles and…

Current research in physics shows that pre-service teachers have poor content knowledge in vector-kinematics. This study describes the types of categories of conceptions pre-service teachers display in vector-kinematics. Descriptive and interpretive qualitative research was conducted in which the data were concept maps from 28 third-year…

We present an interactive discovery-based approach to studying the properties of real gases using simple, yet realistic, molecular dynamics software. Use of this approach opens up a variety of opportunities for students to interact with the behaviors and underlying theories of real gases. Students can visualize gas behavior under a variety of…

Models related to the topic of chemical kinetics are critical for predicting and explaining chemical reactivity. Here we present a qualitative study of 15 general chemistry students' reasoning about a method of initial rates task. We asked students to discuss their understanding of the terms rate law and initial rate, and then analyze rate and…

The purpose of this study was to examine the role of anonymity in encouraging college students to be more cognitively engaged in lectures. Kinesiology majors from three universities were asked to respond to questions during two consecutive lectures using response methods of opposing degrees of anonymity, one using "clickers" and the…

The elementary reaction sequence A ? I ? Products is the simplest mechanism for which the steady-state and quasi-equilibrium kinetic approximations can be applied. The exact integrated solutions for this chemical system allow inferring the conditions that must fulfill the rate constants for the different approximations to hold. A graphical…

An interactive classroom demonstration that enhances students' knowledge of steady-state and Michaelis-Menten enzyme kinetics is described. The instructor uses a free version of professional-quality KinTek Explorer simulation software and student input to construct dynamic versions of three static hallmark images commonly used to introduce enzyme…

My favorite exam question comes from the final exam in an introductory mechanics course: "A rolling 31 ton railroad boxcar collides with a stationary flatcar. The coupling mechanism activates so the cars latch together and roll down the track attached. Of the initial kinetic energy, 38% dissipates as heat, sound, vibrations, mechanical…