This column contains exercises to challenge content knowledge. This month's issue discusses ways to remove CO[subscript 2] from the atmosphere.

An experiment with an electric transformer based on single coils shows how electromagnetic induction changes when the magnetic coupling between coils is adjusted. This transformer has two secondary outputs which are taken differentially. This is the basis for a widely used position transducer known as LVDT.

In this study, we have explored the ways in which small-group work in science can contribute to strengthen multilingual students' subject language and conceptual development when working with language-oriented classroom activities in primary classrooms. The aim is to determine whether it is possible to identify factors in interactions in…

This study aims to determine the effects of activities based on the Prediction-Observation-Explanation [POE] strategy on sixth grade students' understanding of the particulate nature of matter. The study was carried out with a sixth grade group consisting of 41 students from a middle school in an eastern city. Three activities were carried out…

The bacterial cell wall, a structural unit of peptidoglycan polymer comprised of glycan strands consisting of a repeating disaccharide motif [N-acetylglucosamine (NAG) and N-acetylmuramylpentapeptide (NAM pentapeptide)], encases bacteria and provides structural integrity and protection. Lysozymes are enzymes that break down the bacterial cell wall…

As chemists, we understand that science is more than a set of disconnected facts. It is a way of investigating and understanding our natural world that involves things like asking questions, analyzing data, identifying patterns, constructing explanations, developing and using models, and applying core concepts to other situations. This paper uses…

Improving students' understanding of how science works requires explicit instruction. Here, we test the efficacy of a module based on two previously published activities (the "Cube Puzzle" and the case study "Asteroids and Dinosaurs") that teach how science works to college science majors. Students also use the How Science…

Recent GCSE and IGCSE specifications include reference to both permanent and induced magnetism, giving the opportunity for novel classroom demonstrations based on ferromagnetism and paramagnetism, and the transition between these phases. Ferromagnetic materials lose their magnetism if raised above their Curie Temperature, a specific temperature…

Anthropomorphisms are widespread at all levels of the educational system even among science experts. This has led to a shift in how anthropomorphisms are viewed in science education, from a discussion of whether they should be allowed or avoided towards an interest in their role in supporting students' understanding of science. In this study we…

Building on Carey and Smith's work on epistemology of science, this study characterized elementary students' scientific epistemology from the role-of-idea and theory-building perspective. The participants included 102 elementary students in Hong Kong. Open-ended questions and coding schemes were developed to examine and characterize their…

The use of computational molecular modeling to enhance the teaching of chemical concepts is becoming commonplace. Incorporation of this technique into the curriculum, however, typically requires financial investment. This reality poses a problem for institutions where funding and associated resources are scarce and has a potential negative impact…

This study aims to compare and contrast the connotations of the concepts of "science" and "history" that were formed in the minds of students attending both Faculty of Science and Letters, History Department and Faculty of Education, Science Education Department at Agri Ibrahim Çeçen University. The participants of the study…

Instruction in science can be difficult for students with visual impairments due to the use of visual instruction that is often used for conceptual understanding. Pedagogical approaches to teaching science continue to evolve, with inquiry-based science instruction as a primary instructional method used in current classrooms. In teaching students…

Biomimicry is a difficult concept for younger children to grasp. This manuscript describes a group of successful activities that we have used to teach biomimicry to first graders. The activity begins with a class discussion about camouflage, a concept many students have experienced. Then the students participate in an activity in which they are…

We regularly compare magnitudes and describe these comparisons to other people. This article reports 9 experiments that examine how messages about the relative magnitude of two items affect inferences about the items' spatial arrangement. Native English speakers were given sentences such as "One tree is taller than the other," and their…