(1) Background: In self-concept research, Likert scales are still relied upon despite the fact that they pose methodological difficulties for research in culturally diverse societies. This calls the validity of the data into question. In the present study, we develop a mixed methods design for culture-sensitive academic self-concept research. We…

Practicing chemists use models, diagrams, symbols, and figures to represent phenomena which cannot be detected by the human senses. Although research suggests that these external representations (ERs) can also be used to address the challenges that students have in learning chemistry, it is not clear how instructors' use of ERs aligns with their…

The aim of this study was to determine the effects of cooperative learning and models on the conceptual understanding of the chemical reactions. The sample of study was comprised of 71 preservice science teachers from the first grade of science teacher education program. Quasi-experimental method with pre-and post-test of quantitative research was…

A simple synthesis of fluorescent carbon quantum dots from lemon juice is described to introduce advanced high-school students and undergraduate college students to nanoparticle synthesis and quantum dots. The synthesis is based on the carbonization of lemon juice using only a hot plate stirrer. Column chromatography is used to separate different…

It is critical that we understand and address features of learning environments that encumber students historically underrepresented in STEM fields. Here we consider social elements of group work that can either support or impede learning. We tracked gender-bias in student--teaching assistant (TA) interactions in 184 small groups across 27…

As a fundamental part of their chemical education, first-year undergraduate students are substantially involved in laboratory activities. Despite the specific teaching staff choices on the main laboratory aims, students normally receive a vast amount of information during these activities. Apart from understanding theoretical content, fundamental…

Through the experiments described in this article, students become acquainted with the principles behind ternary liquid-liquid systems and/or Aqueous Two-Phase Systems (ATPS), and their characterization by the determination of the binodal curve, tie-lines, tie-line lengths and critical point, as well as in applying the non-random two-liquid model…

This study is designed to test a reciprocal causation, cross-lagged model of self-concept, self-efficacy, and achievement in a postsecondary STEM course. Both self-efficacy and self-concept are known to be related to achievement; however, there is a need to untangle the relationship between the two constructs as well as their association to…

Mentoring, as one of the formal teacher leadership roles, creates a space for teachers to display their leadership potential as it indirectly brings value to the school community (Ensher & Murphy, 2006). The purpose of this qualitative case study is to examine mentor teachers' perceptions whether they transfer their evolving mentoring skills…

Cross-connections between the sciences and mathematics are emphasized through the Next Generation Science Standards and the Common Core State Standards in the United States. One topic that is a common bridge between math and science is the concept of measurement and unit conversions in the metric/English system. This article uses a mixed-methods…

The rapid development of information and communication technologies has enabled the development of interfaces, which allow the recognition of the gestures and movements of the user. These interfaces, due to their affordable prices, are available to a wide range of users. They are called natural user interfaces (NUI). NUI are commonly used in game…

This study consists of a categorisation of the vocabulary of chemistry, focusing on the terminological difficulties students face when learning this subject. Therefore, this classification intends to provide chemistry teachers an awareness of the language barriers students must overcome in their understanding of this scientific discipline. Two…

To address high STEM college attrition rates, it is critical to understand what motivates undergraduates' pursuit of STEM. The current study investigated the association of a diverse socio-demographic background with different types of perceived chemistry career affordances (prosocial, other communal, and agentic) and their association with…

In the context of growing empirical evidence to lack of clear understanding of the language of the science content, undesirable student outcomes including difficulty in learning science and a lack of interest with their science content area, and chemistry being particularly loaded with specialized terminology of its own, this study analyzed the…

A guided inquiry-based experiment exploring the regioselectivity of the hydration of phenylacetylene is described. The experiment uses an acidic gold(III) catalyst in a benign methanol/water solvent system to introduce students to alkyne chemistry and key principles of green chemistry. The experiment can be easily completed in approximately 2 h,…