Band 6, Heft 1

Offering virtual laboratories to chemical engineering students is likely to extend beyond the COVID-19 era. Thus, there is a need to develop more simulation-based tasks in a wide blend of subjects, spanning thermodynamics, chemical reactions, and unit operations. Molecular and material modeling based on density functional theory (DFT) calculations provides limitless opportunities to train students on how to obtain thermokinetic values that are typically measured experimentally. Through a series of illustrative cases, this contribution provides detailed procedures pertinent to calculating reaction rate constants, standard enthalpies of reactions, redox potentials, equilibrium reaction constants, and surface-assisted mechanisms. We hope that DFT-operated virtual labs will assist students in attaining learning outcomes and promote their self-learning in the above-mentioned subjects. From a broader prospective, the presented case studies are expected to encourage students to appreciate the practical applications of DFT, not only in the academic but also in the industrial domains.

This research comprehensively analyzes students’ Chemistry Learning Experience (CLE) during the COVID-19 pandemic, comparing online learning experiences with traditional face-to-face instruction in the post-pandemic phase. Employing a quantitative approach and leveraging the Rasch model, the study focuses on capturing the nuances of individual student perceptions, an aspect often overlooked in group-centric statistical analyses. One hundred students (49 males and 51 females) participated in both study phases. Segmented into behavioral tendencies, content perceptions, and specific learning needs, the evaluation tools provided insights into the students’ CLE across the two instructional modalities. Results from the stacking analysis revealed a positive shift in CLE post-pandemic, with students demonstrating a better grasp of and attitude toward chemistry in face-to-face settings. Racking analysis further underscored the changing difficulty perceptions of specific content items across the two learning environments. Gender-based patterns in CLE were also evident, with male students expressing a more favorable view of online learning during the pandemic than their female counterparts. The research findings advocate for a blended learning approach, harnessing the strengths of both online and traditional instructional methods. Furthermore, insights into gender-specific learning experiences emphasize the need for inclusive and adaptive teaching strategies, ensuring optimal learning experiences for all students. The study underscores educators’ and students’ resilience and adaptability in navigating the challenges of the pandemic. It offers valuable insights for future educational strategies in chemistry education.

Incorporating cultural aspects into science education has recently been stressed in many non-Western societies. However, Chinese traditional cultures are rarely discussed in Chinese science classrooms. Hence, a teaching intervention integrating Confucian ecological ethics and education for sustainable development in secondary chemistry classrooms was designed, implemented online due to the COVID-19 pandemic, and analyzed. It focuses on discussing aspects of Confucian ecological ethics in the context of a lesson plan on the socio-scientific issue of plastic use. Sixty-five 10th-grade students from an urban key public high school in Beijing voluntarily attended this research. Based on the analysis of their feedback it is suggested that Confucian ecological ethics can improve students’ environmental awareness. Most students acknowledged that Confucian ecological ethics could promote Chinese sustainability-oriented chemistry education with a value-oriented approach.

This paper highlights the contribution of the Interactive Instructional Teaching Method (IITM) in improving students’ ability to solve unfamiliar types of questions, adversity quotient, and learning interest in chemistry on the topic of buffer solutions. Two groups of senior high school students from a public school in East Java, Indonesia, participated in this study. One group (experimental) with 29 students experienced IITM, while another group (comparison) with 31 students experienced the Direct Instructional Teaching Model (DITM). The difference in students’ ability between the two groups was assessed using 10 unfamiliar types of questions of buffer solutions. This study uncovered only a small advantage of IITM students over DITM students in answering unfamiliar questions and their adversity quotient scores. However, regarding their learning interest, the contribution of the two teaching approaches was considered equal. Students’ adversity quotient correlated positively to their ability to answer unfamiliar questions of buffer solutions. Meanwhile, the effect of students’ learning interests and adversity quotient on students’ ability to answer unfamiliar questions was found uncorrelated.

Pre–during–post lockdown waves, or how COVID-19 catalysed a change in practical chemistry instruction. This time-lined slogan reflects the University of Southampton’s response to recent imperatives in chemistry education. During the pandemic students had limited access to laboratory training. However, laboratory time has always been precious, and educators constantly have to rethink their approach to lab classes; how to best assess practical learning goals and focus students’ attention on the practical aspects during timetabled – and therefore time-limited – lab classes. The pre–during–post pandemic phases also govern the teaching split of our typical laboratory instruction, and the development during the three phases will be discussed. This article describes the evolution of the University of Southampton’s laboratory training, how resources changed, how in-laboratory student participation improved, how the pandemic influenced the scheduling of teaching activities and informed a development of our assessment strategy. It considers where the rethinking process has led to so far while acknowledging that the current laboratory course is not the end of the process but an interim position, subject to future improvements.

In this paper we describe the development of a self-test on content knowledge as one element of a digital learning environment. The self-test on prior knowledge consists of tasks in the categories Periodic Table of Elements, chemical bonding, chemical formulas, and chemical reactions (reaction equations and reaction mechanisms). For the study, tasks from all topics have been used in a paper-pencil multiple-choice and multiple response test on the task at hand and an accompanying questionnaire with closed and open items. The results of the study show that the students rated the tasks as suitable. Comments for improving the tasks regarding the wording or the design were implemented. Because of students’ lack of understanding regarding some of the technical terms, a glossary and games will be added to the digital learning environment. Many students overestimated their knowledge and their competences, therefore the self-test in the learning environment will include feedback to ensure that the students can improve their content knowledge and its application.

The IUPAC International Chemical Identifier (InChI) is a structure-based chemical identifier that encodes various aspects of a chemical structure into a hierarchically layered line notation. Because InChI is non-proprietary, open-source, and freely available to everyone, it is adopted in popular chemical information resources and software programs. This paper describes the InChI Open Education Resource (OER) (https://www.inchi-trust.org/oer/), designed to provide educators and other interested parties with resources, training material, and information related to InChI. Currently, the OER contains over 100 materials collected from various sources and provides users with search, filtering, and sorting functionalities to locate specific records. New relevant materials can be suggested by anyone, allowing the scientific community to share and find InChI-related resources. This paper will show how to use the InChI OER tag taxonomy to filter content and demonstrate two resources within the InChI OER; the ChemNames2LCSS Google Sheet and the InChILayersExplorer, an Excel spreadsheet that breaks an InChI into its layers. While the InChI OER is of value to a broader chemistry community, this paper seeks to reach out to chemical educators and provide them with an understanding of InChI and its role in the practice of science.

In this paper, the cooling effect of alternative ice cubes made of granite, soapstone and ceramic is experimentally examined with the help of a digital temperature sensor and compared with that of a conventional ice cube. Digital sensors can be integrated in an everyday referenced way in the sense of inquiry-based learning during experimentation in chemistry lessons, since the use of ice cubes is a typical everyday situation that many students know and is therefore well suited for everyday referenced chemistry lessons. The advantages of digital sensors include the easy recording of measured values, the automatic creation of tables and graphs, and the direct link between the experiment and the representation. The results of the experiment reveal that the water ice cube has by far the greatest cooling effect compared to the alternative ice cubes. The entire cooling process of the ice cubes is explained and calculated, which essentially consists of three sub-steps: heating the ice cubes to melting temperature, melting the ice cubes, mixing the melted ice cube with the drink. The comparison of calculated and experimentally measured values shows that the cooling effect of all ice cubes could be determined very accurately experimentally using the digital temperature sensor.