In this laboratory experiment, students determine the number-average molar masses and second virial coefficients of polyethylene glycol (PEG) polymers ranging in molar mass from 200 to 1500 g mol[superscript -1] using vapor pressure osmometry (VPO). Students assess VPO in relation to accurate molar mass calculations of PEG polymers. Additionally,…

Interest in the gender gap in the physical sciences has been ongoing for a number of years. This study aimed to explore differences in gender based on students' self-perception.

This article is a response to a commentary entitled "Comment on 'Rabbit-Ears Hybrids, VSEPR Sterics, and Other Orbital Anachronisms': A Reply to a Criticism," which focuses on the fundamental question of whether there exists a unique set of supposedly "real," or "best," orbitals for a given molecule. The authors of…

Structured collaborative peer teams are widely recognized as a high-impact pedagogy that supports learning outcomes for diverse learners but it can be difficult to implement this pedagogy in an online environment. This communication describes a structure to use collaborative teams to develop and sustain a community of inquiry in an asynchronous…

This study investigates six university professors' reflections on the shift to remote instruction during the Spring 2020 semester in response to the COVID-19 global pandemic. The rapid shift in instructional platform presents an opportunity to learn from unresolved challenges that persisted through the semester. Here we present a qualitative study…

This empirical census study was a quasi-experimental analysis of certification level (primary vs. secondary) and in-field vs. out-of-field certification. The sample included chemistry teachers (n = 2312) and physics teachers (n = 1387) in New York State in 2011-12. Findings indicated that the number of out-of-field teachers was relatively low, but…

The aim of the study is to investigate the attitudes of prospective science teachers towards the use of problem-based learning methods in the learning of concepts related to the subject of solids, and their opinions on its role in academic success, science process skills and the chemistry course. The study group consists of 83 prospective teachers…

During the COVID-19 pandemic, an at-home laboratory program was created and implemented for a section of the general chemistry course at the University of Southern California. The experiments were designed to only utilize safe household items and no special equipment. These laboratory activities, spanning over 4 weeks, focused on concepts usually…

In contrast to traditional science instruction, which encourages students to memorize facts from textbooks, today's science instruction emphasizes the adoption of scientific process skills by students, as well as the teaching of critical thinking skills. Lebanese Chemistry teachers detected lack in middle school and high school students' critical…

Traditionally underserved students (TUSs), including Black, Latinx, American Native, and low-socioeconomic (SES) students, have higher rates of departure from STEM undergraduate programs than their more privileged peers. These higher departure rates are associated with TUSs' lower performance in STEM gatekeeper courses compared to non-STEM courses…

The 3D visualization program paves the way for the development of virtual reality. This study produces a 3D visualization program in virtual reality to increase high school students' critical thinking skills and scientific attitude. The Research and Development (R&D) method was based on the ADDIE model - analysis, design, develop, implement,…

In the past decades, society in general has become strongly diverse. This change also affects schools. As a result, learning groups cannot be seen as homogeneous and taught in this way. One of the challenges is students' linguistic skills. Dealing with different linguistic competencies should not only be a focus of formal education in schools but…

The implementation of educational programs that tackle specific contents and promote English skills is convenient, especially in areas where English skills are not properly developed at universities, such as Spain. Indeed, some subjects are currently presented in English for this purpose. CLIL (Content and Language Integrated Learning), where…

This study enhanced the 7E instructional model towards enriching the science inquiry skills of senior high school learners in General Chemistry 1. A total of 136 Grade 12 learners enrolled in the Science, Technology, Engineering, and Mathematics (STEM) strand participated in the study. The study was composed of three phases. In Phase I, the…

The study of questions has occupied a prominent role in the research into classroom discourse. For science teaching, questions are fundamental since they can connect students with the patterns of scientific thinking. In this article, we developed analytical tools to investigate the epistemic dimension of questions in chemistry teaching. We draw…