A flash purification system using prepacked cartridges containing different silica weights and particle sizes was employed to demonstrate the influence of column characteristics on chromatographic resolution. This chromatographic experiment was a helpful introduction to chromatographic courses where the influence of particle sizes was addressed…

When driving on a sunny day, one can sometimes observe a small solar spectrum in the rearview mirror of a vehicle. The formation of this "rainbow" results from the prism-like structure of the rearview mirror. Our investigation of this phenomenon reveals that the resulting spectrum is formed in a manner similar to the way a rainbow is…

Writing and argumentation are critical to both professional physics and physics education. They are both necessary to the practices of professional science like paper writing and peer review, and are increasingly emphasized in science education standards and best practices. Despite this, the skill of making an extended argument in writing is often…

Students' out-of-school science participation has been identified as a factor that supports adaptive science outcomes. Researchers have largely investigated students' out-of-school science participation in terms of structured science activities (e.g., attending a science camp), with far less consideration of how students' involvement in…

Electricity, especially the flow of current, is a challenging topic for students of all ages. This study conceptualizes students' explanation of electric current as a cluster of knowledge elements. These clusters, in turn, represent students' mental models of electric circuits. Thus, this study aims to identify and characterize students' mental…

This case study examined the characteristics of classroom discourse during physics lessons in two single-sex high school classes--a boys' vs. a girls' class. All lessons were taught by the same teacher and covered the same topics. For each class, six lessons were recorded, transcribed, and coded and the characteristics of the discussion were…

With the global increase of infections caused by antibiotic-resistant bacterial strains, there is an urgent need for new methods of tackling the issue. Genomic analysis of bacterial strains can help to understand their virulence and antibiotic resistance profile. Bioinformatic skills are in great demand across the biological sciences. We designed…

Background: To contribute to smart, inclusive, sustainable, and multisensory practices in science education, this paper presents research that studied the use of electronic sensors by children to address a sound pollution problem in their school. A didactic sequence was specifically designed and implemented to that purpose. Participants: The…

Altmetrics are non-traditional metrics that can capture downloads, social media shares, and other modern measures of research impact and reach. Despite most of the altmetrics literature focusing on evaluating the relationship between research outputs and academic impact/influence, the perceived and actual value of altmetrics among academicians…

Innovative activities carried out during school laboratory sessions include 'flipped learning' (FL), which is an interactive learning environment where the teacher guides students learn individually. This study examined the impact of the adoption of the FL approach on the academic performance of 2nd year science student teachers enrolled in the…

Contextual features of assessments can influence the ideas students draw from and the ways they assemble knowledge. We used a mixed-methods approach to explore how surface-level item context impacts student reasoning. In study 1, we developed an isomorphic survey to capture student reasoning about fluid dynamics, a crosscutting phenomenon, in two…

While much is known about teacher learning of nature of science (NOS) concepts, less is known about how teachers develop an understanding of how to effectively teach NOS or how instructional views might differ across levels of the Family Resemblance Approach (FRA) wheel. Therefore, this study investigated the NOS instructional views related to…

This longitudinal case study utilizes critical event narrative methodology and intersectionality to examine the experiences of one female Caribbean teacher as she sought to enact her vision of socially just science education in secondary schools in the USA. This research explored how the convergence of racial, cultural, and science teaching…

This paper is in dialogue with Lisa Marco-Bujosa's article titled, "Soul searching in science teaching: an exploration of critical teaching events through the lens of intersectionality" where the author takes up the ways that Faith's Jamaican immigrant Black woman identities are shaped and how she understood and enacted teaching for…

In the present research, the "DNA Model with Clothespins" activity was designed to teach the subjects of nucleotide, DNA, and DNA replication, which are abstract subjects of science. The aim of the research, which was carried out with 20 students in 8th grade, was to examine the effects of the activity on students' achievement on the…