The ability to separate, identify, and quantify proteins from complex mixtures are key foundational methods across biochemistry teaching and research. In particular, enzyme-linked immunosorbent assay (ELISA) is an important technique that is used to measure antigen concentrations in both industry and academia. There are four categories of ELISA,…

With calls to reassess higher education teaching methods, active learning practices have quickly become a popular alternative to traditional lectures, especially in STEM courses that traditionally rely heavily on large-lecture formats. In this regard, active learning environments stand to better prepare students for life after college; however,…

In this article, we describe the main phases in the development and validation of a questionnaire measuring secondary students' teleology and essentialism conceptions in the context of genetics. The validation process involved 714 Swiss and French secondary school students from 14 different schools. The process included interviews, several pilot…

This study aimed at investigating the issue of domain specificity of motivation across specific science disciplines (chemistry and physics) in combination with influencing factors related with students' academic major and gender. A clustered sampling was used to select 281 participants who were undergraduate students (105 males and 176 females)…

The use of smartphones in experimental physics is by now widely accepted and documented. PASCO scientific's smart cart, in combination with student-owned smartphones and free apps, has opened up a new universe of low-cost experiments that have traditionally required cumbersome and expensive equipment. In this paper we demonstrate the simplicity,…

Attracting more students to the geosciences is imperative. We have an excellent opportunity to model an inclusive community, with hundreds of thousands of students passing through introductory college courses each year. A previous study documented gender and racial bias in physical geology textbooks. Six texts were reexamined to determine any…

The present study compared Portuguese and Spanish children in the 6th year of primary school in terms of their knowledge and live experience of animals from the Iberian Peninsula (IP) and the African savannah. A questionnaire was administered to 420 children from state schools, 215 from Portugal and 205 from Spain. The questionnaire included…

Teachers are central to providing high-quality science learning experiences called for in recent reform efforts, as their understanding of science impacts both what they teach and how they teach it. Yet, most elementary teachers do not enter the profession with a particular interest in science or expertise in science teaching. Research also…

Students hold many alternative conceptions of thermal physics which are very resistant to change. A conceptual change strategy, the thinking frames approach, based on evidence from educational research was used to address commonly held naïve conceptions about heat in a series of thermal physics lessons. Students' gains in conceptual understanding…

We report the findings of an empirical study that investigated whether the source of data--firsthand or secondhand data gained from lab work experiments--has an influence on students' learning outcomes. Results indicate that students' choice of a correct or incorrect hypothesis for a pendulum lab experiment on the influence of the mass of the bob…

This article aims to analyze the potential of new technologies in the area of green chemistry didactics. When viewed through the lens of systems thinking, the use of these ubiquitous tools can be a driving force for the development of a sustainable world because of their global use and reach. The authors concentrate on flat e-learning platforms,…

Understanding resonance is essential to predict chemical reactivity and explain reaction mechanisms. Despite its importance in the organic curriculum, few studies have explored students' difficulties with this concept and faculty's instructional approaches to teaching it. The goals of this study are to address this gap in the literature by (1)…

The so-called Diet Coke and Mentos experiment is initiated by dropping Mentos candies into a bottle of Diet Coke or other carbonated beverage. This causes the beverage to rapidly degas, causing foam to stream out of the bottle. Simple application of the gas laws leads to the straightforward prediction that ejection of greater foam volume is…

This research aims to develop a falling chain experiment apparatus using kitchen scales and digital cameras (smartphones). Digital cameras were used to observe and record changes in the mass of falling chains measured using kitchen scales. Video recordings from observations of falling chain masses were analysed using Tracker 5.1.1 software. The…

Dialogue is a critical component of teaching, especially when considering it from a sociocultural theory of learning. An instructor's knowledge of the subject matter is critical, but not sufficient. The ability to verbally articulate that knowledge while hearing and responding to the developing ideas and knowledge of the students is necessary to…