A new system for tracking a metal ball rolling on the slope of the touch panel of a tablet computer was developed. The widespread introduction of tablets in educational environments allows the use of a convenient dynamic measurement in schools.

A smartphone is a powerful learning aid in the hands of a large section of students around the world. The camera of the phone can be used for several learning purposes apart from its obvious purpose of photographing. If the focal length of the lens of the camera can be determined, several experiments in optics can be performed with it. In some…

With the development of digital technology, plentiful sensors are embedded in the smartphone, which makes it a valuable tool for teaching elementary experimental physics. For instance, the magnetic field sensor of the smartphone has been used to measure gravitational acceleration by measuring the magnetic pendulum's oscillation period. The…

Conventional mobile phone colorimetry usually utilizes the RGB color mode to measure concentration of solutions, but the paper entitled "Determining the Amount of Copper(II) Ions in a Solution Using a Smartphone" proposes the use of hue ("H") to measure the concentration. It is pointed out that the "H" value increases…

In this study, we propose a novel and direct method of determining the focal length of a converging or diverging lens using a smartphone. The standard optical sensor used in modern smartphone cameras is an active-pixel sensor called the complementary metal-oxide-semiconductor (CMOS). The CMOS is covered by an assembly of five to seven camera…

Practical experiments enhance students' understanding of basic concepts and promote deep learning experiences in chemistry. The smartphone application of Lab4Chemistry was utilized to replace colorimeters with smartphone camera sensors. Low-cost and readily available materials, including anthocyanin (fresh red cabbage) and common kitchen…

Cost-effective and user-friendly, mobile phone-assisted methods have remained underutilized in qualitative social science research. The scarce methodological guidance, together with recruitment and ethical challenges, has arguably stifled advancements in this area. COVID-19 exposed the need to better equip researchers with the expertise and tools…

An inexpensive at-home quantitative analysis activity was developed for the determination of glucose in unknown samples using paper-based microfluidic devices. All of the materials and reagents for the activity fit in a small kit that was mailed to students. The only items students needed to supply were water and a smartphone. Microgram quantities…

Ever wonder how an astronaut's mass is measured in space? Of course, a weight scale is of no use, because the astronaut and the scale are in free fall. Measuring the period of a spring mass oscillator is one way to measure mass. In this article, we will demonstrate a method to measure mass using a smartphone, a rubber band, and an app called…

Over the last decade, smartphones have become commonplace. Today, 95 percent of American teenagers have a supercomputer in their pocket. Jonathan Haidt, Jean Twenge, and others have brought necessary attention to the likelihood that smartphones and social media are partly to blame for the teenage mental health epidemic gripping the nation. It's…

As chronic absenteeism fails to ease from post-pandemic high levels, schools can turn to many reforms to promote school attendance. Commonly recommended strategies involve increasingly targeted and intensive tiers of interventions. Researcher Thomas S. Dee writes that the research base of many of these interventions is not strong. Schools facing…

Youth are inactive in today's world. Integrating autonomy, competence, and relatedness into Physical Education objectives to provide optimally challenging tasks for students may be an effective approach to making them love physical activity. Optimal challenge, or the challenge level of the task matches the student's competence, can provide them…

Online learning is rapidly expanding across the educational landscape, particularly at the tertiary level of education. When combined with appropriate pedagogy, the tremendous advancement of technology has transformed the face of education. This integration has created new possibilities for enhancing teaching quality. Augmented Reality (AR) is one…

We propose a laboratory experiment on the quantitative study of the normal dispersion of light. A triangular isosceles prism made of flint glass TF3 is used as the object of study, and we describe a simple and affordable device for observing and photographing the dispersion spectrum on a smartphone. A possibility of the quantitative investigation…

In recent years, do-it-yourself microcontrollers and sensors have gained increased attention as measurement devices for physics teaching (see, for example, Refs. 1-5). This is not surprising, since Arduinos are relatively cheap and ubiquitous, the code base and design are open source, and there is a wide variety of sensors available. Arduinos can…