A method is described to measure the coefficient of restitution (COR) by dropping a ball on a piezoelectric disk. Multiple bounces can be observed at small drop heights, so the average COR over say ten bounces can be obtained from just one ball drop, without having to measure the bounce height or the bounce speed. The results show directly that…

The following story tells the details of the ketone body metabolism, focusing on the needs of the brain in prolonged fasting conditions. This literary composition highlights the use of ketone bodies as an important metabolic adaptation that avoids excessive protein degradation and allows for greater survival. The liver produces ketone bodies that…

Students have difficulty bridging the conceptual gap between Newtonian and relativistic physics, and, consequently, the teaching of special relativity has been discussed extensively in the literature. A comprehensive list of such references is too large to include, but a brief list is given. In this paper, the author presents several exercises,…

One of the easily accessible results in elementary fluid mechanics is the so-called Torricelli's theorem (or law), which states that the velocity U[subscript th] of the fluid exiting from an orifice at depth "h" from the free surface of a container filled with fluid, is the same as the velocity of a free-falling body from rest over a…

When driving on a sunny day, one can sometimes observe a small solar spectrum in the rearview mirror of a vehicle. The formation of this "rainbow" results from the prism-like structure of the rearview mirror. Our investigation of this phenomenon reveals that the resulting spectrum is formed in a manner similar to the way a rainbow is…

Double-slit interference is a difficult phenomenon for students to grasp in an introductory physics course. A thorough understanding of constructive and destructive interference is critical, but even with such an understanding, visualizing exactly how an interference pattern is formed by light passing through two slits can still be a challenge for…

Over the last years, the European Commission has heavily promoted various forms of digital education. In this article, we draw upon two recent European policy documents as key articulations of Europe's contemporary governing apparatus: Opening Up Education and the Digital Education Action Plan. The article more particularly conceives of both…

Certain explanatory elements or documents can convey unambiguously inaccurate explanations, or they may simply suggest such explanations and encourage a critical passivity towards them. This chapter presents these "risk factors", in particular: the accuracy of the conclusion and the associated "confirmation bias" (two…

Electricity, especially the flow of current, is a challenging topic for students of all ages. This study conceptualizes students' explanation of electric current as a cluster of knowledge elements. These clusters, in turn, represent students' mental models of electric circuits. Thus, this study aims to identify and characterize students' mental…

Contextual features of assessments can influence the ideas students draw from and the ways they assemble knowledge. We used a mixed-methods approach to explore how surface-level item context impacts student reasoning. In study 1, we developed an isomorphic survey to capture student reasoning about fluid dynamics, a crosscutting phenomenon, in two…

The canvas of science education needs to be viewed in its totality to prevent the confounding of some basic issues and to enable us to evaluate the fads and fashions in educational practice. Policies and processes in education are tacitly shaped by theories in the humanities and social sciences. Inadequate understanding of these theories, or the…

The aim of this research is to examine the effects of web 2.0 tools used in online astronomy education on the conceptual achievement of 5th grade secondary school students. For this purpose, the Sun, Earth and Moon unit was processed online using web 2.0 tools. The study was implemented in a public secondary school over a period of 6 weeks. Mixed…

Research indicates that teachers lack a sophisticated understanding of Nature of Science (NOS), which in turn, can impact their instructional decisions and students' understanding of NOS. The aim of the study was to investigate United Arab Emirates (UAE) early years' science teacher's (N = 433) perceptions about the NOS. Results obtained from a…

While much is known about teacher learning of nature of science (NOS) concepts, less is known about how teachers develop an understanding of how to effectively teach NOS or how instructional views might differ across levels of the Family Resemblance Approach (FRA) wheel. Therefore, this study investigated the NOS instructional views related to…

The historical dimension of biology attests to the various conceptions of living organisms that have governed the construction of scientific knowledge over time, some of which still persist today. The present study aimed to identify and characterise the various conceptions of living organisms held by future teachers and biologists and the…