A virtual catalytic reactor laboratory (VCRL) experiment, which can be used in most browsers, is described. Students select feed conditions and use the VCRL to take data for a gas-phase catalytic reaction and fit kinetic parameters to a Langmuir-Hinshelwood rate expression. The VCRL contains instructions, equipment descriptions, an animated…

In this work, we have developed an alternative device composed by an Arduino board and an INA219 sensor to experimentally obtain the mathematical formulas describing the charge and discharge of the capacitor for educational proposes. We have obtained excellent agreement between theoretical prediction and experimental measurements. The INA219 DC…

Learning in high schools has used a lot of smartphone assistance to make it easier for students to understand the material explained by the teacher. However, with the many uses of smartphones in learning, of course, it must provide positive benefits to the ability of students, especially the science literacy ability. In this study, the objectives…

We discuss the development and validation of a conceptual multiple-choice survey instrument called the survey of thermodynamic processes and first and second laws (STPFaSL) suitable for introductory physics courses. The survey instrument uses common student difficulties with these concepts as resources in that the incorrect answers to the…

Take-home examinations were utilized during the COVID-19 pandemic for upper-level analytical chemistry lecture courses. The questions were often scenarios which required the students to determine the best type of instrument to use and how to go about the experiment. Answers submitted were well thought out and detailed, showing that the students…

Chemistry faculty instructors (FIs) and graduate student instructors (GSIs) regularly engage in the evaluation and grading of student responses in formal formative and summative assessments. In this study, we identified dimensions of variation in these instructors' approaches to the evaluation and grading of students' answers. Using qualitative…

Teaching modern physics in high school is of increasingly importance as it can offer students a more realistic and updated vision of the world, and can provide an opportunity to understand the most recent scientific discoveries. In this context, general relativity (GR) occupies a prominent place, since it is related to astonishing scientific…

This article highlights the multianalytical study of exuded liquid from an ancient Egyptian sealed alabaster vase by Master's students in an applied chemistry for cultural heritage course. Master students are introduced to the field of Archaeometry that see the collaboration of experts in different areas of research such as conservators, curators…

Gold nanoparticles are exciting materials in nanotechnology and nanoscience research and are being applied across a wide range of fields including imaging, chemical sensing, energy storage, and cancer therapies. In this experiment, students will synthesize two sizes of gold nanospheres (~20 and ~100 nm) and will create gold nanostars utilizing a…

This study investigated grade 4 learners' understandings about the Nature of Scientific Inquiry (NOSI) in primary schools within the South African context. A qualitative methodology was employed using a framework of five knowledge aspects about the NOSI in assessing learners' understandings about the ways scientists investigate the natural world.…

Science has long been regarded as an important subject in a school curriculum and science teachers play a vital role in the learning process of the students in the science classrooms as well as in other subjects. However, students still encounter problems related to their science teachers, which significantly influence their academic performance…

Purpose: This study aims to enhance the Basic Science Process Skills of Grade 8 learners by creating and integrating localised learning material in Life Science through a socio-cultural context. Method: The study used a descriptive method of research to unravel the learners' perception of the contextualised learning material and a single group…

Purpose: This study aims to assess the validity and reliability of the Psycho-B'GREAT Module developed according to the ASSURE's Module Development Model. Method: The content validity of the Psycho-B'GREAT Module was assessed by ten experts in the fields related in teaching and learning (T&L) and biology education. In testing the…

Can a class assignment covering the reading help students do better in an introductory chemistry class for nonmajors? Two sections of the same course have been compared where one section had a reading assignment that "forced" the students to interact with the text while the other class had the typical homework, quiz assignments, and…

Science Teacher training is an important subsector of professional higher education, and continuous professional development with the latest techniques and trends is vital. The quality of science teacher training in Pakistan could benefit from improved science teacher training models and classroom practices. This Interpretative Phenomenological…