Most educational literature on conceptual change concerns the process by which introductory students acquire scientific knowledge. However, with modern developments in science and technology, the social significance of learning successive theories is steadily increasing, thus opening new areas of interest to discipline-based education research,…

In this paper, we utilize the readily known theory of the ideal transformer to furnish a self-contained qualitative explanation on the AC-powered Thomson jumping ring (TJR) experiment.

The theory of the Big Bang is accepted nearly universally among the scientific community. However, there is a small cadre of individuals who dispute this consensus and they point to a handful of datums that don't fit into the picture. One such datum is the existence of a star with an age reported to be older than the cosmos itself. This star is…

The atom is science's biggest idea! And now it is known that even children from 4 years of age can grasp it, creating science education's biggest worldwide opportunity. Dr. Jenny Donovan and Dr. Carole Haeusler of the University of Southern Queensland conducted multiple studies to show that primary-age children, mostly aged 7-9 years in their…

The aim of this article is to propose a didactical approach to establish appropriate relations between different kinds of chemical knowledge and explanations at the macro and the submicro level. Incorrectly moving between these two levels is regarded as the cause of many misconceptions in school chemistry, and several theoretical frameworks have…

Evolutionary theory is fundamental to biology, yet evolution instruction in high schools has often been unsatisfactory. How or whether high school biology teachers teach evolution is influenced by their own acceptance or rejection of evolutionary theory, parents' and community members' views, and in the case of some private schools, their…

Over the past few decades, physics education researchers (PER) developed a variety of assessments instrument for research and instructional purposes. Most of these instruments are designed to measure topical understanding. Generally, if student performance is satisfactory, it is assumed that the students possess the content understanding and that…

In the current paper, we develop an approach to early science pedagogy that is based on insights about how complex adaptive systems function. Complexity approaches have an important advantage over traditional information-processing approaches: They anticipate the proverbial 'mind with a mind of its own' without having to postulate exclusively…

The focus of the present study is the learning processes of concepts related to hydrogen bonds, which were developed using a didactic sequence (DS). Based on the perspective of Imre Lakatos, it was observed whether the explanatory models created by upper-secondary students form progressive transition sequences, which are similar to what Lakatos,…

To prepare students for the complex, multidisciplinary problems they will face outside of the classroom, current reform initiatives advocate for the integration of content and practices from science, technology, engineering, and mathematics (STEM) in the science classroom. One approach, integrated STEM, uses the engineering design process as a…

Nature of science (NOS) is a global conception of the infrastructure of science and, therefore, forms the foundation for teaching and learning science, especially for preservice teachers who are expected to have the proper understanding of NOS to thoughtfully emphasize NOS within their instruction to students. However, studies investigating UAE…

Ernst Haeckel (1834-1919) is most recalled in the history of biology for his Recapitulation Theory and the allegedly fudged illustrations of embryos that he presented in support of that case. Less well known is his contribution to abiogenesis theory, which he incorporated into evolutionary theory. In so doing, Haeckel, a vitriolic atheist, was…

Two well-regarded measurements for the expansion rate of the universe disagree, leaving cosmologists very puzzled. It may be that something large has been overlooked in our theory of the Big Bang. This discrepancy is called the Hubble tension and it has led to a very interesting conversation within the cosmology community.

An introduction to the noble gases and chemical bonding via Lewis theory and the octet rule are common inclusions in secondary school curricula. However, the usual approach may lead to misconceptions and difficulties when valence bond (VB) theory and valence shell electron pair repulsion (VSEPR) theory are taught at a later pre-university stage.…

Solutions to global issues demand the involvement of scientists, yet concern exists about retention rates in science as students pass through school into University. Young children are curious about science, yet are considered incapable of grappling with abstract and microscopic concepts such as atoms, sub-atomic particles, molecules and DNA.…