Understanding reaction mechanisms is integral to success in organic chemistry; however, prior research suggests that learners struggle with recognizing the importance of underlying implicit features in reaction mechanisms. Because of this struggle, understanding how learners' reason about reaction mechanisms and developing assessments to elicit…

Calculating analytical uncertainties as a part of method validation is a relevant aspect of field and laboratory practices in instrumental analytical chemistry subjects, which usually require complex algorithms. This work describes the development and didactic use of an automatic and straightforward informatics tool, implemented in an Excel macro,…

Molecular modeling can be used as an excellent teaching method for providing better insight into the mechanism of free radical reactions. Due to its highly visual nature, it can affect and improve students' perception and visualization of chemistry phenomena. The majority of chemistry students will know how to represent a reaction between two free…

As the size of a nanoparticle is reduced, the fraction of surface atoms increases. It is interesting to note that various chemical and physical properties depend on the fraction of surface atoms. One of the most obvious questions that arise is how could one possibly estimate the fraction of surface atoms in a nanoparticle? Herein, we discuss…

The goal of this study is to examine the role of knowledge and epistemological beliefs in the relationship between STEM (science, technology, engineering, and mathematics) professional development programme (SPDP) and instructional practices in a longitudinal study. To achieve this goal, it first determined the relationship and impact of SPDP on…

Chemistry and Chaos is a role-playing game that was developed to teach a wide variety of chemistry topics. The game uses the traditional role-playing framework to present material in an engaging and interactive format. The students take on the role of a particular type of chemist while the instructor guides them on an adventure to test their…

This study aimed to examine the impact of years of experience and field of expertise on the development of chemistry knowledge structures from STEM experts comprising 103 professors, 10 postdocs, and 146 doctoral students. Of these participants, 127 were specialized in chemistry and the rest were from various science and engineering disciplines.…

A two-year long-term workshop centered around a phenotypic whole-cell screening strategy for integrating cutting-edge knowledge and discovery-based laboratory experiences was developed to serve as a preparatory course for enhancing the teaching quality of the upper-level discovery-based research internship curriculum for pharmacy major…

Organic chemistry is notorious for being difficult to learn. Herein we describe a two-pronged approach to engage students in the ability to afford successful knowledge building. We have drawn on focus group interviews with students to show that the approach is appreciated by the students. The two prongs comprise peer learning in small groups and…

This study investigated the use of collaborative instructional approaches on form two science students' performance in redox reactions. The sample for this study consisted of 106 science students from Winneba Senior High School in Ghana. The sample was selected from two intact classes in the school. After a pre-test organized for both classes, the…

This study aimed to capture the development of interaction among the components of pre-service chemistry teachers' enacted PCK throughout the school experience course. Data were collected from four pre-service teachers using content representation (CoRe), observations, field notes, and semi-structured interviews. Secondary analysis was conducted…

Mole, molar mass and the Avogadro number are used constantly to measure the amount of substance in chemical changes. However, students have difficulty in understanding these concepts because they are not familiar with measuring very small amounts of matter that cannot be seen and weighed in daily life, like atoms. The mole concept was developed to…

The present work is the report of an intern, who through the theme: "Drugs" shows the importance of the use of didactic sequence in the teaching of chemistry for the construction of concepts. The content was applied in classes of the 3rd year of high school, in a public school, in the city of Apucarana - PR. In this sense, the main types…

This study examines learners' issues in learning the preparation and qualitative analysis of salts topic from Malaysian chemistry teachers' perspectives. The researchers adopted a qualitative design and conducted semi-structured interviews with sixteen informants who have experience of teaching chemistry for more than five years. They were…

Knowledge transfer refers to the (1) recognition of overlap in past learning and new academic goals, (2) recollection of previously learned information, and (3) application of past learning in a new context or discipline. Promoting effective transfer remains a notorious challenge for chemistry educators. To address this need, the step back,…