Energy conversion devices such as fuel cells, metal-air batteries, and electrolyzers have been envisaged as possible solutions for cutting down the continuous accumulation of greenhouse gases resulting from the combustion of fossil fuel. The bottleneck reaction for these devices is the oxygen reduction reaction (ORR) occurring at the cathode. The…

A series of models in the Educational CAD Model Library can be used to reconstruct mechanical animation machines such as the Praxinoscope and related animation mechanisms. Hands-on experiences can be used to enhance understanding of historical invention processes and related science concepts. Foundational concepts of visual perception are…

In natural science education, experiments often lead to the collection of raw data that need to be processed into results by doing calculations. Teaching students how to approach such calculations can be done using digital learning materials that provide guidance. The goal of this study was to investigate students' behaviour regarding the use of…

This study investigated the extent to which the notion of knowledge about alternative conceptions is featured in the curriculum for pedagogy courses of a pre-service science teacher programme and explored pre-service students' understanding of the notion having completed the pedagogy courses. This was achieved by analysing three curricula, one…

In science education, students need to work with laboratory elements that create conditions for them to learn to do science and experience the value of making meaning in this process. However, students rarely get to carry out investigations that resemble actual scientific practices. More often, they are encouraged to follow an already given…

This commentary proposes the metaphor of "languaging-as-practice" in science education as an alternative to "language-as-tool" metaphors. Describing language as a tool implicitly positions language as static and unchanging and assumes that named languages are distinct and bounded entities. In contrast, describing languaging as…

The course-based undergraduate research experiences (CURE) approach is increasingly being used in undergraduate experimental courses. Here, we describe the implementation of CURE in an upper-level inorganic chemistry course, in which students were assigned different current themes to study. This paper focuses on the theme of quantum dots,…

In this two-session experiment for an organic chemistry lab, students prepare a macrocyclic host compound--namely, a pillar[5]arene--by means of a templated 1,4-dimethoxybenzene/formaldehyde cyclo-oligomerization (session 1), and then, they explore its molecular recognition properties toward the 1,8-diaminooctane guest with the aid of [superscript…

Anaerobic respiration reactions are of fundamental importance to global biogeochemical cycling of elements. Yet, the idea that cellular respiration can occur not only in the absence of oxygen but also involve the oxidation of inorganic substrates (e.g., AsO[subscript 3 superscript 3-], Fe[superscript 2+], H[subscript 2], H[subscript 2]S,…

The following activity was developed to allow students to actively participate in and measure the kinetics of a multistep process. Each group of students is given a stack of blank coloring pages, each with a rainbow design printed on it. Each student in a group is given a different color crayon and colors in their portion of the picture before…

Gamified-integrated STEM is a technique that combines integrated STEM stages with gamification elements and can engage individuals in climate change communication. This paper presents a gamified-integrated STEM activity focused on global climate change. The activity includes gamified-integrated STEM instructional stages implemented in 6 lesson…

In this study, we analyzed how scientific terms such as principle, law and theory are depicted in Chemistry textbooks used by students in Singapore. There are very few reports in the science or chemistry education literature that explicitly explore the term principle, although all three terms appear in a number of topics in the high school…

This thesis identifies and explains the gaps in prior and current applications of representational competence construct in chemistry. Representational competence (RC) describes a set of skills that chemistry researchers Kozma and Russell observed experts demonstrate when engaging with disciplinary representations (Kozma & Russell, 1997; Kozma…

In primary organic chemistry, students learn about the dehydration of ethanol to ethylene with concentrated sulfuric acid. Similar reactions(the dehydration of alcohols) exist in nature. For example, various alkenes with aromas are synthesized from linalool, a monoterpene tertiary alcohol. In this laboratory experiment, we report experiments…

In this second-semester organic chemistry lab experiment, students work collaboratively using a combination of chemical synthesis and NMR spectroscopy to investigate the diastereoselectivity associated with the Meerwein-Ponndorf-Verley (MPV) reduction of two ketone substrates having carbonyl groups flanked by an [alpha]-chiral carbon with…