In this paper, a simple method is described for visually demonstrating that the wavelength of light reduces when entering a medium of higher refractive index. When a violet laser (405 nm) is reflected off the surface of a Blu-ray disc (track spacing 320 nm) diffraction cannot occur since the wavelength is greater than the track spacing. However,…

This dissertation provides a start-to-finish description of development, administration, and validation for an online middle-school physics test using a DCM framework with response-time. The first paper illustrated the process of implementing DCM with a careful selection of the content domain and a simulation approach for a Q-matrix construction.…

Intelligent personal assistants (IPAs) carry massive potential in enhancing students' performance through individualized dynamic scaffolding strategy. Despite IPAs being increasingly recognized among educationists, little is known about their application in the development of students' scientific inquiry skills, particularly in physics. This study…

This research was qualitative, it was to investigate Buddhist cosmology as found in Buddhist scriptures and compare cosmological perspectives between 5 Buddhist scholars and 5 scientists. In Thai Buddhist cosmology, the principles of "Pa?iccasamuppada" and "Tilakkha?a" share some similar ideas with the causality principle of…

Critical thinking skills (CTS) have been applied in the learning environment to address students' challenges in the twenty-first century. Therefore, specific approaches need to be implemented in the learning environment to support students' CTS. This research explores students' CTS during the learning process through the engineering design process…

Background: In exploratory learning, students first explore a new topic with an activity and then receive instruction. This inversion of the traditional tell-then-practice order typically benefits conceptual knowledge and transfer, but not always. Aims: The current work examines the impact of including contrasting cases in an exploration activity,…

Preparing for high-stakes exams in introductory physics courses is generally a self-regulated activity. Compared to other exam reviewing strategies, doing practice exams has been shown to help students recognize gaps in their knowledge, encourage active practicing, and produce long-term retention. However, many students, particularly students who…

Quantitative literacy---the use of mathematics to describe and understand the world---is an essential skill. Physics has an opportunity to contribute to how students develop quantitative literacy, as much of physics curriculum centers on making sense of quantitative models. One facet of quantitative literacy in physics is covariational reasoning:…

Prospective physics teachers must have research skills because they will later utilize and transfer these skills throughout their teaching careers. However, research shows that students' research skills, including in Indonesia, are still low. In addition to equipping students with theoretical research knowledge, an emphasis is needed on the…

Measurement uncertainty is an important topic in the undergraduate laboratory curriculum. Previous research on student thinking about experimental measurement uncertainty has focused primarily on introductory-level students' procedural reasoning about data collection and interpretation. In this paper, we extended this prior work to study…

[This paper is part of the Focused Collection on Qualitative Methods in PER: A Critical Examination.] Identifying student ideas about particular physics topics is one of the earliest and longest-standing foci of physics education research. This paper presents a method for identifying common conceptual resources for understanding physics, using…

Quantum mechanics is a field often considered very mathematical, abstract, and unintuitive. One way some instructors are hoping to help familiarize their students with these complex topics is to have the students see quantum effects in experiments in undergraduate instructional labs. Here, we present results from an interview study about what it…

Textbooks play a fundamental role in teaching and learning in school science classrooms. In this paper, we investigate the presentation of the nature of the electromagnetic field in a dozen of the world's most popular introductory university physics textbooks. We analyze, from an epistemologically based teaching approach, the didactic treatment of…

The fact that a bungee jumper can reach an acceleration greater than the acceleration of gravity is, also from a physics point of view, intriguing. Taking only gravity into account, it can be explained by applying conservation of energy or by deriving carefully the equation of motion in a Newtonian approach. In this article we show how it can be…

The Metapendulum is a combination of both the simple gravity pendulum and the spring pendulum. Both excite each another and, therefore, can be used as an example of mechanical resonance phenomena. The data of a smartphone's accelerometer can be used to record the acceleration of the pendulum during the oscillation movement. With that, the…