A high variety of experimental model organisms have been used in developmental biology practical lectures. The work with developing embryos is crucial to make students aware of the multiple biological phenomena underlying normal animal embryogenesis and morphogenesis and represent a unique experimental platform to analyze the impact of molecular…

Formal understanding of the nature of science (NOS) has been considered to be a major contributor to nurturing students' scientific literacy. In China, this view has been endorsed in the new standard for high school physics curriculum, which has guided the development of the new generation physics textbooks. Following the analytical framework…

This article draws greater attention to the use of language as a pedagogical tool in science teaching and learning. Evidence shows that Alexander's (2020) 'dialogic teaching' approach is significant in promoting learning in science when used interchangeably with authoritative patterns of talk. This article explores dialogic teaching, drawing on…

The aim of this study is to examine the readability levels of the texts on the biology units in the science textbook prepared for the sixth grade. This study, which is based on a qualitative approach, was carried out with the method of document analysis. The textbook examined in the study is Middle School and Imam Hatip Middle School Science…

Is the reductionist approach to teaching chemical principles in the laboratory adequate for students to make effective evaluations? In this work, using the example of sunscreens, students first assessed the analytical chemistry parameters of the active ingredients, later comparing and contrasting them with organic chemistry information for…

Owing to the COVID-19 pandemic, all teachers' training courses scheduled for summer 2020 had to transition to online formats. For the arts-integrating course "Teaching Chemistry by a Creative Approach", this shift jeopardized the course's essence, since learning by this approach is based on creative, hands-on, and active learning. Here…

The shifting emphases of new national curricula have placed more attention on knowledge generation approaches to learning. Such approaches are centered on the fundamental sense of generative learning where practices and tools for learning become the focus of the learning environment, rather than on the products of learning. This paper, building on…

Catalysis is not only one of the most crucial principles of Green Chemistry but also one of the most used industrial strategies to improve yields and to shift to more environmental-friendly processes. Due to the great importance of catalysis, we propose a laboratory activity related to heterogeneous catalysis courses (upper and undergraduate…

Crosscutting concepts (CCCs) are superordinate in the scientific concept system, common across disciplines, and very abstract. These characteristics, with the addition of incoherence in their curricular presentation, can challenge instructors. We designed a modular course based on coherence and conceptual understanding. The course structure was…

Critical and analytical thinking skills are included in higher-order thinking skills which become the focus of educational goals in recent era. This study aimed to determine the relationship between critical and analytical thinking skills in ecology learning at senior high school in East Jakarta. This research was conducted from March to June…

The use of group drawing to promote student-generated representation is a common instructional strategy as it combines the benefits of using visual representation and collaborative talk. Although the affordances of group drawing have increasingly been emphasized in science education, few studies have investigated how drawing as a visual mode…

This paper provides seven topics on sodium hydrogen carbonate (NaHCO[subscript 3]) and its ions for readers looking for familiar material phenomena to strengthen students' understanding of the chemical concepts of thermodynamics. The first concept is the ideal gas law, followed by the van't Hoff equation, Gibbs energy, pH change, chemical…

Introductory chemistry textbooks often present valence bond (VB) theory as useful, but incorrect and inferior to molecular orbital (MO) theory, citing the electronic structure of O[subscript 2] and electron delocalization as evidence. Even texts that initially present the two theories on equal footing use language that biases students toward the…

Colorful transitions of various acid-base indicators have been used to illustrate the concept of chemical equilibria, especially in spectrophotometric determination of the equilibrium constants or pKa values. To accommodate an online laboratory environment necessitated by the COVID-19 pandemic, this work employs color analyses from digital images…

We report on a distance learning experimental project for chemistry-major students on the synthesis of ethyl dodecanoate (C[subscript 11]CO[subscript 2]Et), a model for biodiesel, considering green chemistry principles. Thus, we employed a "recyclable acid catalyst" (an ionic liquid) and used chemometrics and microwave heating (MW) to…