The chemistry of metal-organic frameworks (MOFs), a new class of emerging crystalline porous solids with three-dimensional (3D) networks composed of metals and multidentate organic molecules, was introduced by using three differently shaped crystals. We reported new and mild MOF synthesis methods that are simple and devised to be performed in high…

In this article, we show a "very" simple algorithm for the evaluation of the character tables applicable to all finite point groups. The method uses linear combinations of the symmetry operators associated with the point group's classes as the basis set. Eigenvectors of the resulting matrix of such representations are related to the…

The decisions and actions that chemistry educators make regarding why, what, how, and when to teach certain content or implement a specific instructional activity are often guided, but also constrained, by explicit or implicit "didaktik models". These types of models direct our attention and actions when designing curricula, planning for…

Educators cannot overlook the affect's potential for students' educational success. In this study, affective analogies are proposed as a didactic resource to foster students' affect for chemistry learning and positive attitudes towards the physics-chemistry subject. To examine the influence of the affective analogies on it, we grouped contents of…

Argumentation is a key skill in most school subjects and academic disciplines, including mathematics and science. It is possible that similarities and differences between how argumentation is expressed in different subjects can contribute to, or disrupt, students' transferrable argumentation skills. The purpose of this study is therefore to…

This study explored the impact of oxidation-reduction reaction problem difficulty on university students' cognitive load using event-related potentials (ERPs). Forty-eight balanced low and high difficulty problems were designed. Fifteen undergraduate students majoring in chemistry (8 females and 7 males) participated in the study. Results…

Teaching resilience to students is essential so that they can thrive in the face of adversity and develop into effective problem solvers. In this study, we developed a resilience intervention programme by using a blog platform and examined its effectiveness among first-year university students enrolled in a basic organic chemistry course. Based on…

The forming of microplastics in the environment continues be a global problem with damaging risks to ecosystems and human health. Currently, most microplastic studies concentrate on water and air, while research focus on terrestrial samples such as soil still lags behind. This project reports the first results of our effort to develop and…

Laboratory management is crucial in improving the quality of chemistry learning in senior high schools. However, there has been limited research on the managerial competence of chemistry teachers in managing laboratories. This study aims to analyze the managerial competence of high school chemistry teachers in laboratory management. The study used…

This paper deals with the science competences of fifth-grade students (ages 10 and 11 years) in Slovenia. The science content researched in this study comprises chemical concepts, such as aqueous solutions, states of matter, and nutrition. The science competence and science competencies that elementary school students are supposed to develop are…

Reform-oriented instruction is advocated in secondary science, encouraging students to engage with the experimental and epistemic practices of science. It is challenging for teachers though, especially for out-of-field teachers. This study focuses on biology and chemistry teachers who are called to teach middle-school physics. These teachers face…

Background/purpose: Learning chemistry is often considered challenging due to its abstract nature. To address this, the application of Project-Based Learning (PjBL) emphasizes learning through real-world projects to enhance conceptual understanding. The Science, Technology, Engineering, and Mathematics (STEM) approach enriches this process by…

The intricate relationship between representational competence and content knowledge in organic chemistry has been widely debated, and the ways in which representations contribute to task difficulty, particularly in assessment, remain unclear. This paper presents a multiple-choice test instrument for assessing individuals' knowledge of fundamental…

Students' perceptions of an activity involving visualization are important in assessing their learning of the task. In view of this, this study was developed with undergraduate students from different courses at a public Brazilian university. The research objective was to determine how three students, who are majoring in different courses…

A deep understanding of organic chemistry requires a learner to understand many concepts and have fluency with multiple skills. This understanding is particularly necessary for constructing and using mechanisms to explain chemical reactions. Electrophilicity and nucleophilicity are two fundamental concepts to learning and understanding reaction…