The trajectory of a ball rolling across an inclined plane was recorded on video film to determine if it followed a parabolic path as others have suggested. The challenges in this case were (a) to determine the magnitude and direction of the friction force on the ball, (b) to determine the effect of the friction force on the trajectory and (c) to…

A 2.7 m long stringless pendulum was set up to measure the coefficient of rolling friction of various balls, at higher rolling speeds than usually observed with a short stringless pendulum. The arrangement is easy to set up and makes an impressive classroom demonstration as well as an interesting laboratory experiment.

A collision of one object with two or more objects is relatively complicated in general, but a simple example is provided by Newton's cradle since all the objects are identical and in line. In the present paper, an experiment is described where a heavy mallet collides head-on with two billiard balls. The two conservation equations indicate that…

An experiment is described where a pendulum bob was allowed to roll back and forth across an inclined plane. The period of oscillation is larger than that for oscillation in a vertical plane, in part because the effective value of "g" is reduced on an inclined plane. The experiment highlights the differences between all three common…

The chirality of chemicals is a well-known concept among undergraduates. The examples of chiral molecules in daily life are introduced to high school students as well. However, the chirality of single-walled carbon nanotubes (SWCNTs) remains unpopular in these groups. In this paper, a simple visualization of SWCNTs was first performed via paper…

A comprehensive laboratory work that allows students to gain hands-on skills in energy-efficient mechanochemistry is described. Standard university curricula are paying very little attention to mechanochemistry, although skills in this discipline are highly demanded among chemistry graduates. In this study, a comprehensive description of…

Utility value interventions (UVIs) are brief assignments designed to promote students' perceived utility value of the content they are learning. UVIs have been shown to improve students' academic performance in varying STEM courses; however, the use of UVIs in either chemistry courses or upper-level courses has not been well explored. This study…

"Copper to Silver to Gold: The Alchemist's Dream" is an experimental demonstration performed in many schools that involves Zn plating on a Cu coupon to induce brass plating. In this study, a novel method to achieve uniform plating is proposed using a 2.0mol/L ZnCl[subscript 2] aqueous solution, sodium dodecyl sulfate, and Al foil. This…

The principles of process-oriented guided inquiry learning (POGIL) are applied to the analysis of the emission spectrum of atomic hydrogen. Over the course of three learning cycles, students construct the hydrogen atom's energy level diagram and assign quantum numbers using their measurements of the Balmer series plus additional information on the…

The inexorable rise in atmospheric carbon dioxide impacts not only global warming but also the acidity of the ocean. Increasing ocean acidity causes a decline in carbonate (as it is protonated), which in turn will negatively impact the ability of calcifying marine organisms to build their calcium carbonate shells. A simple set of equilibrium…

The reasons particular people enjoy science, pursue science, and see themselves as science people, or not, are diverse and complex (Brickhouse, et al., 2000). The ways that teachers present science and value particular ways of knowing and doing in the classroom can influence which students see themselves as science people (Carlone et al, 2011).…

This book aims to highlight science education in countries along the Belt and Road. It consists of 30 chapters divided into three main parts, namely Arab and African countries, Asian countries and European countries. We invited science education experts from 29 "Belt and Road" countries to introduce the current status of science…

Engaging children in argumentation-focused discussions is essential to helping them collaboratively make sense of scientific phenomena. To support this effort, teachers must listen and be responsive to students' ideas to move the discussion forward with the goal of reaching consensus. Given the complexity of this ambitious science teaching…

Researchers and practitioners in the United States increasingly promote phenomena-based instruction in science that supports the development of a coherent storyline throughout the unit. Questions about "who" is constructing the science storyline and "how" still remain. Employing a qualitative ethnographic case study approach,…

Recently, Virtual reality (VR) technologies have started to be used increasingly in the field of education, as in many other fields. With the widespread use of virtual reality applications, there is a need to investigate the effects of virtual reality applications in the field of education. The results obtained from these researches can contribute…