Journal of Research in Science Teaching最新文献

The teaching of science in K-12 schools has long been criticized as a process that propagates oppression for students who do not conform to entrenched norms of gender, sex, and sexuality. Academic standards, curriculum, and textbooks are rife with rhetoric that reinforces any deviation from cisheterosexuality as aberrant, unusual, or abnormal. However, these often-over-simplified conceptions discount the historic social and scientific intricacies of gender and sexual diversity as well as students' own lived experiences. While there have been advancements in LGBTQ+ and gender-inclusive science education reform, these movements have been stymied by a lack of cohesive guidelines for pedagogy and practice, particularly for trans, nonbinary, and gender-creative youth. Situated within trans-created conceptual frameworks for critical education, this study explored the pedagogical practices of 10 transgender science teachers with the purpose of learning from their experiences creating gender inclusive curriculum. From the data (in-depth interviews, instructional materials samples, and reflective teaching statements) emerged the TRANS (Trans and Research-informed Approaches for Nonbinary and gender-inclusive Science education) Framework for gender inclusive science education pedagogy. This framework is anchored in three domains for teaching science through a trans-informed lens:interrogating and accessing power, resisting essentialism, and embracing experiential knowledge and personal epistemologies. The findings of this study contribute to our growing understanding of gender-inclusive science learning environments. Importantly, this study amplified the experiential knowledge of teachers whose voices are critically absent from research surrounding gender and LGBTQ+-inclusive science education practice. Moreover, the framework derived from teachers' experiences can be used to guide educators in making their science classrooms safer and more gender inclusive.

Phenomena-based approaches have become popular for elementary school teachers to engage children's innate curiosity in the natural world. However, integrating such phenomena-based approaches in existing science courses within teacher education programs present potential challenges for both preservice elementary teachers (PSETs) and for laboratory instructors, both of whom may have had limited opportunities to learn or teach science within the student and instructor roles inherent within these approaches. This study uses a convergent parallel mixed-methods approach to investigate PSETs' perceptions of their laboratory instructor's role within a Physical Science phenomena-based laboratory curriculum and how it impacts their conceptual development (2 instructors/121 students). We also examine how the two laboratory instructors' discursive moves within the laboratory align with their's and PSETs' perceptions of the instructor role. Qualitative data includes triangulation between a student questionnaire, an instructor questionnaire, and video classroom observations, while quantitative data includes a nine-item open response pre-/post-semester conceptual test. Guided by Mortimer's and Scott's analytic framework, our findings show that students primarily perceive their instructors as a guide/facilitator or an authoritarian/evaluator. Using Linn's knowledge integration framework, analysis of pre-/post-tests indicates that student outcomes align with students' perceptions of their instructors, with students who perceive their instructor as a guide/facilitator having significantly better pre-/post-outcomes. Additional analysis of scientific discourse from the classroom observations illustrates how one instructor primarily supports PSETs' perspectives on authentic science learning through dialogic–interactive talk moves whereas the other instructor epistemologically stifles personally relevant investigations with authoritative–interactive or authoritative–noninteractive discourse moves. Overall, this study concludes by discussing challenges facing laboratory instructors that need careful consideration for phenomena-based approaches.

Transformational equity-centered science education requires the fields of science education and school leadership to critically consider the limited preparation elementary principals are offered to lead for science education. Thus far, little effort has been made to foster a transdisciplinary curricula beyond traditional organizational theories related to school culture and climate; learning sciences; and supervision. School leadership programs are currently inadequately preparing elementary leaders in rigorous pedagogies involving science education. Although the role of principals is often not discussed concerning science implementation in elementary education, principals play a critical role in science decision-making. In this study, the authors present a case study of one elementary principal who also served as an othermother. Othermothers have been described as those who share mothering responsibilities in Black communities. Through interview transcripts, field notes, and social network data, the authors examine how this othermother cared for her students and community by advocating for science instruction. By strategically navigating the socio-political and policy climate and drawing on her authentic relationships, this othermother was critical in implementing a science agenda for elementary science. Three themes that emerged from the data analysis are, (1) othermothers view science as a potential means to transform lives and fulfill the needs of the local community, (2) science policies (i.e., federal, state, and local) can limit the potential of the vision of science an othermother has for the community, (3) othermothers draw on their community to guide equitable science instruction. Overall, othermothers have visions for what science can do. However, they cannot counter the status quo individually. Collective action among educators in various roles is one means of moving an equity agenda concerning science education forward.

One of the core practices of science is constructing scientific explanations. However, numerous studies have shown that constructing scientific explanations poses significant challenges to students. Proper assessment of scientific explanations is costly and time-consuming, and teachers often do not have a clear definition of the educational goals for formulating scientific explanations. Consequently, teachers struggle to support their students in this process. It is hoped that recent advances in machine learning (ML) and its application to educational technologies can assist teachers and learners in analyzing student responses and providing automated formative feedback according to well-defined pedagogical criteria. In this study, we present a method to automate the entire assessment-feedback process. First, we developed a causal-mechanical (CM)-based grading rubric and applied it to student responses to two open-ended items. Second, we used unsupervised ML tools to identify patterns in student responses. Those patterns enable the definition of “meta-categories” of explanation types and the design of personalized feedback adapted to each category. Third, we designed an in-class intervention with personalized formative feedback that matches the response patterns. We used natural language processing and ML algorithms to assess students' explanations and provide feedback. Findings from a controlled experiment demonstrated that a CM-based grading scheme can be used to identify meaningful patterns and inform the design of formative feedback that promotes student ability to construct explanations in biology. We discuss possible implications for automated assessment and personalized teaching and learning of scientific writing in K-12 science education.

Both K-12 schools and STEM disciplines are embedded in White supremacy and exclusion, making it that much harder for Black women to maintain an interest and sense of belonging in STEM. Through a Critical Race Feminism methodology, we tell the counterstories of our two co-authors, two Black women, over the course of their lives. Through these counterstories (stories that run counter to normative stories of STEM as male and White), Kelli and Samantha show us how they negotiated and maintained a sense of belonging in STEM even through moments of self-doubt in their STEM trajectory. These negotiations allowed them to carve a space for themselves within STEM. A key finding from these counterstories was the resilience both women developed through their participation in counterspaces and support from family and teachers that helped them develop pride in their STEM identity trajectories. Our study adds to the research on Black women's journeys in STEM by describing resilience strategies that our authors were forced to develop in response to White supremacy and how they were able to maintain their STEM identity by creating a counterstory that allowed them to maintain their sense of belonging within STEM. And yet, we conclude by asking if resilience is enough since both women questioned their authentic and valued place in their respective STEM disciplines because of the dominant storyline of STEM as White and male. Their stories reveal the deeper truth that change is needed in STEM to empower students of color to see themselves as not just tolerated but valued members of the discipline.

This study used a cluster randomized controlled trial to investigate the effectiveness of two approaches to increasing middle school students' science learning when using an inquiry-based science curriculum. Eighty-nine schools, with 253 teachers and 20,591 students, were randomly assigned into one of three conditions: (a) a treatment condition in which the textbook curriculum was modified based on three principles of cognitive science coupled with teacher professional development (PD), (b) a second treatment condition in which teachers received PD designed to improve their knowledge of the science content, and (c) a business-as-usual control group. The cognitive science treatment had a small but statistically significant positive effect on content learning, with a stronger impact on students of higher prior achievement. Compared to business-as-usual, the intervention to increase teacher content knowledge had no impact.

Science teachers and educators seek to promote equity and inclusion within their classrooms. Yet, many do not examine how their roles could reproduce oppression that continues to exclude certain groups of students. Centering on how oppression interacts with science teaching and learning, this naturalistic study observed Ms. William and her implementation of two STEM units that integrate science and engineering, to understand power, race, and privilege dynamics in her middle school STEM classrooms. Specifically, we focused on understanding oppression at the interpersonal and internalized level in Ms. William's class. We collected and analyzed video recorded lessons from two different classrooms, two STEM curricula Ms. William had co-developed, and conducted semi-structured interviews after she taught her two STEM units. We identified themes of oppression perpetuated in the classroom by employing thematic analysis, which when guided by our theoretical framework enabled us to illuminate the complex relationship between science teaching and maintaining whiteness as the dominant discourse in science learning. Our findings suggest that an active and critical role from science teachers and educators are required; we must reflect deeply on our science curriculum and teaching strategies and identify practices that remains to be oppressive if promoting equity and inclusion is at the forefront of our science teaching.

Preservice secondary science teachers often experience science learning in narrow and marginalizing ways in their science preparation. These experiences cause harm, particularly for preservice teachers of color. They also limit the disciplinary resources they can develop for later teaching science in ways that value and sustain their students' ways of knowing and being in the world. Our research explores possibilities for cultivating new spaces for preservice secondary science teachers to engage in science. In a content-focused education course, we designed for and studied preservice teachers' engagement in expansive and connective sensemaking, incorporating heterogeneity, power, and historicity in pursuits of explanatory accounts of the natural world. In this article, we examined how this course design can support preservice teachers to attune to heterogeneity in ways of knowing in science and to connect to identity and historicity in scientific sensemaking. Our analysis suggests that students' final projects reflected attunements to diverse knowing, communicating, and relating in science and deep connections with their identities and future-making, yet had fewer connections to sociohistorical narratives and structures. We developed illustrative case studies of four student projects, highlighting the personal, social, and political possibilities of creating space for future educators to imagine more expansive and connective forms of science. This study contributes a novel model for preservice science teacher education to support teacher learning to value and sustain their students' ways of knowing and being in the world.

The purpose of this case study, informed by a Lakatosian perspective, is to identify how an alternative conception that originates in present learning but is related directly to subsequent learning contexts can be constructed. Before the study, one of the authors found by accident that a student who had learned about Avogadro's principle and chemical reaction in South Korea constructed an alternative conception related to the volume of gas. Later, we identified seven Korean high school students with the alternative conception through a test and analyzed their underlying understandings qualitatively through interviews. The results show that they had a scientific conception—core conception—and intuitive assumptions about implicit information of external representations—implicit assumptions—in common. The students' implicit assumptions could be divided into three types again: core assumption, auxiliary assumption, and context-inducing assumption. The core assumption, like the core conception, played a significant role in constructing the alternative conception (hard core), while the auxiliary assumptions were incomplete implicit assumptions to protect the alternative conception (protective belt). The context-inducing assumption was an implicit assumption bringing the context of the subsequent curriculum, and the core conception and the core assumption could be interpreted in this induced context. At the end of the study, the implications related to learning progressions were discussed.

Researchers and practitioners in the United States increasingly promote phenomena-based instruction in science that supports the development of a coherent storyline throughout the unit. Questions about who is constructing the science storyline and how still remain. Employing a qualitative ethnographic case study approach, we explore how three Latinx female students authentically contribute in their high school chemistry class and change the science storyline originally developed by the teacher. Data include over 950 min of video recordings, student artifacts, and interviews collected from a unit about reaction rate, which was contextualized by students' experiences with a local wildfire. The analysis points to three instructional moves that appear to play an important role in shifting the collective storyline: connecting to Latinx students' personal concerns, moving across multiple figured worlds, and recognizing students' epistemological contributions. Implications for supporting minoritized students are discussed.