Explicit-reflective nature of science (NOS) instruction has demonstrated a positive impact on student learning. Although explicit-reflective NOS instruction often consists of questions that draw students' attention to NOS ideas, there are few recommendations in the science education literature about how the form of these questions might inform NOS…

In one of the Faraday's experiments an electric current is induced in a conducting loop when a magnet in front of it moves towards or away from the loop. While the direction of circulation of the electric current in the loop has only two options, it depends on three experimental conditions that generate eight cases. Even though the Faraday law or…

It is well known that Newton's work on mechanics depended in a crucial way on the previous observations of Galileo. The key insight of Galileo was that one can analyze the motion of bodies using experiments and mathematical equations. One experimental observation that roughly emerges from this work in modern terms is that two objects of different…

Bridges are a popular topic in this journal, because they are a very visual display of static and dynamic physical principles. In this paper, we provide an intuitive derivation of the equations associated with suspension bridge cables and load-bearing arches, which is of pedagogical interest in illustrating the consequences of Newton's laws for…

The principle of relativity is of fundamental importance in practice when we are solving problems in physics since the axiom states that the result of any physical experiment is the same when performed with identical initial conditions relative to any inertial coordinate system. Hence, conceptual knowledge of coordinate systems is central in any…

Design activities can serve as a concrete experience to address the similarities and differences between science and engineering, and also demarcate engineering from tinkering. They can lay the foundation for concept development of targeted disciplinary ideas. Minor, but crucial, changes to classroom tinkering activities along with targeting and…

When instructors assess students' laboratory reports to appraise the underlying scientific reasoning, they disclose their own concerns, epistemological assumptions and beliefs about science. The analysis of such assessments (i.e. rubric-centred scores and corresponding justificatory comments) offer a wealth of insights that can be re-engaged in…

This lesson used the correspondence of Charles Darwin as an exploration of nature of science (NOS) in a historical context. Specifically, we used his original correspondence about his "provisional hypothesis" of pangenesis as a novel way to explore a scientist's social community. Darwin's community of friends and colleagues in the…

Numerous studies have shown that a considerable number of students do not accept the theory of evolution, prompting the scientific community to seek ways to improve how lessons on evolution are designed in order to promote students' acceptance. A crucial factor identified in many studies is students' comprehension of the nature of science and…

Our purpose in this paper is to put forward an argument about both the need and the value for understanding how the constructs of science identity and the nature of science (NOS) might intersect and intertwine and offer useful insights about science participation in times of crises. Based on our knowledge and understanding of these two research…

Issues associated with nature of science (NOS) have long been recognized as an essential component of scientific literacy. While consensus exists regarding the importance of an explicit reflective approach, precisely how to teach NOS remains elusive. The present study explores one particularly promising approach, namely the use of historical…

Atoms may repel or attract each other, but bound systems get virtually all of the attention in the classroom. To address the imbalance, instructors can explore the basis of repulsion in a few simple systems and highlight the important role played by the Pauli principle. A good example is the first triplet excited state of H[subscript 2] wherein…

The conventional approach to teaching blackbody radiation in introductory modern physics courses relies on an oversimplified explanation of Wien's displacement law, which does not uphold students' conceptual understanding of Planck's law and can lead to well-known misconceptions. Thus, there is a need to clarify the pedagogical role of this…

In order to describe the velocity of two bodies after they collide, Newton developed a phenomenological equation known as 'Newton's experimental law' (NEL). In this way, he was able to practically bypass the complication involving the details of the force that occurs during the collision of the two bodies. Today, we use NEL together with momentum…

What if energy flowed from cold to hot regions? How would thermodynamics be different? We examine such an imagined cold-to-hot world, abbreviated here as a C2H world, and show that the unfamiliar direction of energy flow implies that two thermally interacting objects at different temperatures will not equilibrate. We find that there is no…