This study aims to analyse students' extraneous cognitive load (ECL) in cell biology lectures. Participants in the study were 31 students of the Biology Education Department who attended the Cell Biology course from a university in Jakarta, Indonesia. The Cell Biology lectures include fours topics. The data of ECL were measured using…

This paper aims to explore (1) students' chemistry self-efficacy beliefs and metacognitive skills during problem solving in chemistry, (2) a potential significant difference of chemistry self-efficacy beliefs and levels of metacognitive skills in accordance with subject fields and, (3) the level of chemistry self-efficacy beliefs as a predictor of…

We designed and tested a 3D motion tracking system which displays acquired and derived data using augmented reality. This setup, based on a virtual reality headset and its controllers, is a relatively low-cost, high-precision, six degrees of freedom, high-speed, multiple-objects tracking device. This apparatus proves to be a very high-quality…

Radiochemistry faces a well-documented training and recruitment crisis. Older radiochemists are retiring, and fewer young people are studying radiochemistry. In turn, this is leading to a shortage in newly qualified radiochemists, as well as a loss of historical knowledge (as know-how is often not passed-on). Here, we analyzed the relevance of the…

My dissertation research has been a quest to understand how to improve metacognition development in undergraduate chemistry education. The first step I took in this investigation was to speak with those with the largest influence on an undergraduate chemistry student's education: the instructors. I interviewed seventeen postsecondary chemistry…

Nearly half of all U.S. students who declare science majors in college do not graduate with science degrees within six years. Improvements in science outcomes are linked with active-learning pedagogies such as Course-based Undergraduate Research Experiences (CUREs). However, despite the need for education reform particularly in Alabama,…

Although many undergraduates begin college as STEM majors, attrition rates from the field are high and numerous reports suggest that evidence-based teaching methods are critical for retention. Despite educators' research and near consensus that active learning is more effective than lecture, there are many types of active learning and the…

This study explored perceptions and practices around authentic assessment within a diverse, science-based school at an Australian University. We were motivated to inquire into authentic assessment through a work-readiness lens, with the goal of embedding the assessment of skills that are transferable across a range of STEM roles and graduate roles…

As online courses become increasingly common at the college level, an ongoing concern is how to ensure academic integrity in the online environment. One area that has received particular attention is that of preventing cheating during unproctored online exams. In this study, we examine students' behavior during unproctored exams taken in an online…

We present a modernization of the undergraduate physical chemistry laboratory experiment for determining the speed of sound in various gases from resonant frequencies in a spherical resonator. The resonator (schematic IR = 7.5 cm) is constructed by 3D printing with eco-friendly poly(lactic acid), a commercially viable alternative to traditional…

Scientific reading and communication have become key components in postsecondary science education. However, undergraduates have often been found to lack motivation to engage in these tasks. The present study surveyed 2098 undergraduates and 27 biology faculty members to compare their views on the importance and time cost of eight practices in…

Although there is increased uptake of active learning approaches in especially developed countries, this is still lagging within the African context. The current study therefore focused on the implementation of group learning at Stellenbosch University, with several modifications versus our earlier, pilot study. Students freely formed small groups…

Physics education research is replete with observations and proposed explanations for gender disparities in physics. In this work, we operationalize a definition for equity as everyone has access to the learning environment and everyone's voice is heard (adapted from previous definitions). We review prior research that observed inequities in…

Using smartphones in experimental physics teaching offers many advantages in terms of engagement, pedagogy and flexibility. But it presents drawbacks such as possibly endangering the device and also facing the heterogeneity of available sensors on different smartphones. We present a low-cost alternative that preserves the advantages of…

The video of a free-falling object was analysed in Tracker in order to extract the position and time data. On the basis of these data, the velocity, gravitational potential energy, kinetic energy, and the work done by gravity were obtained. These led to a rather simultaneous validation of the conservation law of energy and the work-energy theorem.…