Although recent research has reported equity gains in the university-level physics classroom, there remains evidence of significant inequities by race. We conducted a series of multiple linear ...regressions to examine the magnitude of these inequities in introductory mechanics final exam scores. When we followed a common method of grouping students by underrepresented minority (URM) status in our statistical analysis, we found that when controlling for prior knowledge, based on ACT math and physics placement test scores, there was no evidence of racial inequities. However, when we performed the same analysis but replaced URM status with separate groups for each race or ethnicity reported to the university, we found that African American and Asian American students, and to a lesser extent, Hispanic students, underperformed in their physics course relative to their non-Hispanic White American peers, even when controlling for prior knowledge. We conclude that grouping students by URM status may not be sufficient to detect patterns of academic difficulties experienced by specific racial and ethnic groups of students. Furthermore, these results lead us to believe that there is still work to be done at the university level to provide a learning environment supportive of students of all backgrounds.
Abstract In teacher professional development (PD), grouping teachers with varying levels of experience can be a productive and empowering way to stimulate the exchange and co‐generation of content ...and pedagogical knowledge. However, less experienced teachers can face socio‐emotional risks when engaging in collaborative science content reasoning tasks with more experienced colleagues, and these risks may impact the collaborative experience of both parties and the learning environment in teacher PD. This exploratory case study examines the process of productively navigating socio‐emotional risks and interpersonal tensions encountered by a veteran and pre‐service physics teacher during one episode of discussing physics content. We use a single term, comfort‐building , to encapsulate discursive moves that result in increased feelings of comfort and safety by the participants. Comfort‐building includes moves that serve to mitigate social risk, ease tension, and avoid discomfort, as well as those geared toward finding common ground and co‐navigating challenges. These moves can carve out conversational space for teachers to more confidently face risks associated with being accountable to the physics content knowledge and engage in discipline‐based conversations more deeply. The presented case was followed by video‐stimulated individual interviews to determine how consciously the teachers connected their participation to explicit risk and comfort. This case study highlights an affective dimension for consideration in the continued study and facilitation of science teacher PD, especially programs that bring together teachers with a variety of backgrounds and skill sets.
Anthropogenic alterations of the environment have increased, highlighting the need for human-wildlife coexistence and conflict mitigation. Spatial ecology, and the use of passive satellite movement ...technology in particular, has been used to identify patterns in human-wildlife conflict as a function of shared resources that present potential for dangerous situations. Here, we aim to remotely identify patterns indicative of human-crocodile conflict in Guanacaste, Costa Rica by exploring site fidelity and diverse modes of movement (i.e., land and water) across space between nuisance (relocated) and non-nuisance (wild) crocodiles. Advanced satellite remote sensing technology provided near-constant movement data on individuals at the regional scale. Telonics Iridium SeaTrkr-4370-4 transmitters were used with modified crocodilian fitting. Results indicate that relocated crocodiles exhibited large-scale movements relative to wild crocodiles. Nuisance relocated crocodiles either returned to the area of nuisance or potentially attempted to in short time frames. The results presented here highlight the need for alternative management strategies that facilitate relocation efficacy.
We evaluated the feasibility and utility of a laboratory model for examining observer accuracy within the framework of signal‐detection theory (SDT). Sixty‐one individuals collected data on ...aggression while viewing videotaped segments of simulated teacher—child interactions. The purpose of Experiment 1 was to determine if brief feedback and contingencies for scoring accurately would bias responding reliably. Experiment 2 focused on one variable (specificity of the operational definition) that we hypothesized might decrease the likelihood of bias. The effects of social consequences and information about expected behavior change were examined in Experiment 3. Results indicated that feedback and contingencies reliably biased responding and that the clarity of the definition only moderately affected this outcome.
In teacher professional development (PD), grouping teachers with varying levels of experience can be a productive and empowering way to stimulate the exchange and co-generation of content and ...pedagogical knowledge. However, less experienced teachers can face socio-emotional risks when engaging in collaborative science content reasoning tasks with more experienced colleagues (Finkelstein, Jaber, & Dini, 2018), and these risks may impact the collaborative experience of both parties and the learning environment in teacher PD. This descriptive case study examines the process of productively navigating socio-emotional risks and interpersonal tensions encountered by a veteran and pre-service physics teacher during one episode of discussing physics content. We use a single term, comfort-building, to encapsulate discursive moves that result in increased feelings of comfort and safety by the participants. Comfort-building includes moves that serve to mitigate social risk, ease tension, and avoid discomfort, as well as those geared toward finding common ground and co-navigating challenges. These moves can carve out conversational space for teachers to more confidently face risks associated with being accountable to the physics content knowledge and engage in discipline-based conversations more deeply. The presented episode in this study was followed by video-stimulated individual interviews to determine how consciously the teachers connected their participation to explicit risk and comfort. This case study highlights an affective dimension for consideration in the continued study and facilitation of science teaching communities of practice, especially ones that bring together teachers with a variety of backgrounds and skill sets.
Providing high-quality professional development for teachers with diverse backgrounds and classroom experience is a challenging task. In this work, we investigate the Illinois Physics and Secondary ...Schools (IPaSS) partnership program, which provides instructional resources and a network of support for high school physics teachers through a partnership with the University of Illinois. IPaSS aims to address disparities in physics instruction by equipping teachers with university physics curricula and equipment adapted to fit the context of their high school classrooms. IPaSS' professional development design and facilitation draw inspiration from the Communities of Practice (CoP) model with a responsive facilitative approach in the design and enactment of professional development. Using interviews and surveys from 14 physics teachers, we studied the extent to which the program has responded to teachers' diverse needs while supporting their participation in physics teaching CoP. The results revealed that this model of responsive professional development -- conceptualized as being attentive and adaptive to teachers' needs -- has created very positive perceptions of the program for the teachers involved and fostered pedagogical and instructional support, professional growth opportunities, and social or personal benefits of community involvement for them. The results also demonstrated that mutual peer support has gone beyond the dynamics of the Communities of Practice framework, not only from more to less experienced but also in the reverse direction. In addition, the case study of the program revealed that taking a responsive approach can potentially facilitate teachers' transitions from being peripheral members to becoming active participants in the community.
PDF
