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The greatest challenges for contemporary and future natural resource production are sociotechnical by nature, from public perceptions of mining to responsible mineral supply chains. The term sociotechnical signals that engineered systems have inherent social dimensions that require careful analysis. Sociotechnical thinking is a prerequisite for understanding and promoting social justice and sustainability through one’s professional practices. This article investigates whether and how two different projects enhanced sociotechnical learning in mining and petroleum engineering students. Assessment surveys suggest that most students ended the projects with greater appreciation for sociotechnical perspectives on the interconnection of engineering and corporate social responsibility (CSR). This suggests that undergraduate engineering education can be a generative place to prepare future professionals to see how engineering can promote social and environmental wellbeing. Comparing the different groups of students points to the power of authentic learning experiences with industry engineers and interdisciplinary teaching by faculty.

 

Key Points Significant sensitivity of mid‐latitude deep convective storm and the associated anvil cirrus cloud to choice of model microphysics schemes Hydrometeor size‐dependent microphysical process are linked with large variability in storm dynamics Six bulk microphysics schemes produced an order of magnitude spread in above‐tropopause water vapor concentrations 

Los sistemas de ecuaciones lineales (SEL) corresponden a un concepto fundamental del álgebra lineal, pero hay relativamente poca investigación, pero hay relativamente poca investigación acerca de la enseñanza y el aprendizaje de los SEL, particularmente de las concepciones de los estudiantes acerca de sus soluciones. Se ha encontrado que la resolución de sistemas con un número infinito de soluciones o sin solución tiende a ser menos intuitivo para los estudiantes, lo cual indica la necesidad de más investigación en la enseñanza y aprendizaje de este tema. Entrevistamos a dos estudiantes de matemáticas que eran también maestros en formación a través de un experimento de enseñanza por parejas para mirar cómo razonaban acerca de las soluciones de SEL en ℝ3. Presentamos los resultados enfocando en la progresión del razonamiento de los estudiantes sobre las soluciones de los SEL a través del lento de simbolización. Documentamos la progresión de su razonamiento como una acumulación de significados numéricos, algebraicos y gráficos coordinados y las simbolizaciones de sus conjuntos solución. 

Access to fast and reliable nucleic acid testing continues to play a key role in controlling the COVID-19 pandemic, especially in the context of increased vaccine break-through risks due to new variants. We report a rapid, low-cost (~ 2 USD), simple-to-use nucleic acid test kit for self-administered at-home testing without lab instrumentation. The entire sample-to-answer workflow takes < 60 min, including noninvasive sample collection, one-step RNA preparation, reverse-transcription loop-mediated isothermal amplification (RT-LAMP) in a thermos, and direct visual inspection of a colorimetric test result. To facilitate long-term storage without cold-chain, a fast one-pot lyophilization protocol was developed to preserve all required biochemical reagents of the colorimetric RT-LAMP test in a single microtube. Notably, the lyophilized RT-LAMP assay demonstrated reduced false positives as well as enhanced tolerance to a wider range of incubation temperatures compared to solution-based RT-LAMP reactions. We validated our RT-LAMP assay using simulated infected samples, and detected a panel of SARS-CoV-2 variants with successful detection of all variants that were available to us at the time. With a simple change of the primer set, our lyophilized RT-LAMP home test can be easily adapted as a low-cost surveillance platform for other pathogens and infectious diseases of global public health importance.

 

This article investigates the implementation of inquiry-oriented instruction in 20 undergraduate mathematics classrooms. In contrast to conventional wisdom that active learning is good for all students, we found gendered performance differences between women and men in the inquiry classes that were not present in a noninquiry comparison sample. Through a secondary analysis of classroom videos, we linked these performance inequities to differences in women’s participation rates across classes. Thus, we provide empirical evidence that simply implementing active learning is insufficient, and that the nature of inquiry-oriented classrooms is highly consequential for improving gender equity in mathematics. 

Establishing and sustaining a sense of belonging is a necessary human motivation with particular implications for student learning, including in engineering. Students who experience a sense of belonging are more likely to display intrinsic motivation and establish a stronger sense of identity and persistence. It is important, however, to distinguish different domains of belonging, such as belonging to one’s university, belonging to a major, and belonging in the classroom setting. Our study examines if and how faculty support efforts contribute to diverse students’ sense of belonging in the classroom setting. Specifically, we sought to answer the following research questions: Which faculty support efforts promote a sense of classroom belongingness? Do faculty support efforts differentially promote a sense of classroom belongingness for students based on their demographic characteristics? Data for this study was collected in the Fall of 2018, across ten institutions, n = 819. We used the Faculty Support items from the STEM Student Perspectives of Support Instrument developed from Lee’s model of co-curricular support to answer our research questions. Demographic categories were created to understand if and how faculty support efforts differentially promote a sense of belonging for minoritized students compared to their counterparts. Multiple regression analysis was conducted to examine the faculty support efforts that fostered a sense of belonging in the classroom. Interaction effects were included to understand how faculty support efforts affected classroom belongingness for the students in the demographic groups we identified. Minoritized women were less likely to feel a sense of belonging in the classroom when compared to majoritized men. Neither groups of women believed that their instructors wanted them to succeed, thus negatively impacting their classroom belongingness. There were, however, faculty support efforts that positively contributed to a sense of belonging in the classroom for minoritized women, including instructors’ availability, knowing that they could ask instructors for help in course-related material, and when instructors fostered an atmosphere of mutual respect. Additionally, minoritized women felt a sense of classroom belonging when they could capitalize on their previous experiences to scaffold their learning. Our findings highlight classroom practices and strategies faculty can use in the classroom to support minoritized women’s sense of belonging. These practices and strategies will be a crucial resource for engineering educators and administrators who seek to improve the field’s retention of minoritized and women students. Whereas efforts have been made to recruit minoritized students into engineering, our study points to a clear and crucial role for faculty to play: they can support minoritized students by fostering a sense of belonging in engineering classrooms.