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Early science, technology, engineering, and mathematics (STEM) education sets the stage for future STEM learning. The purpose of this synthesis is to understand the findings from investments to improve prekindergarten (preK) and elementary science teaching from projects funded by the National Science Foundation’s Discovery Research PreK-12 (DRK-12) program. In the 5 years spanning 2011–15, the DRK-12 program funded or cofunded 25 projects, totaling more than $60 million, related to improving preK and elementary science teaching. Our review identified 25 DRK-12 projects related to improving preK and elementary science teaching funded in 2011–15. We synthesized findings from 25 of those projects that produced products (e.g., peer-reviewed journal articles, conference papers) that described the project and outcomes. We synthesized the empirical findings from interventions in four common areas of investment: (a) preservice preK and elementary preparation programs, (b) in-service teacher professional development (PD), (c) instructional materials for preK and elementary teachers, and (d) strategies for diverse learners. Link to PDF: https://www.air.org/sites/default/files/2022-08/Improving-Prek-and-Elementary-Science-Teaching--DRK-12-STEM-August-2022.pdf 

Argumentation is a core disciplinary practice in mathematics and science that is important for both content understanding and everyday reasoning. In this report, we investigate how the National Science Foundation’s (NSF’s) recent research investments have advanced understanding and supported the development of interventions that improve the teaching and learning of argumentation in mathematics and science education. In the 5 years spanning 2011 to 2015, NSF’s Discovery Research PreK–12 (DRK-12) program funded or cofunded 23 projects relating to argumentation, with more than $40 million awarded. These 23 DRK-12 projects primarily focused on argumentation in high school and middle school and applied correlational/observational and longitudinal methods (rather than quasiexperimental or experimental methods), often reporting on the design and implementation of technological supports for the teaching and learning of argumentation. Our synthesis of empirical findings focused on how these projects studied both teacher- and student-facing interventions that improved the teaching and learning of argumentation, as well as naturalistic observations of argumentation in classroom settings that helped inform the design and development of future argumentation interventions. Link to PDF: https://www.air.org/sites/default/files/2022-05/Mathematical-and-Scientific-Argumentation-in-PreK-12-April-2022.pdf 

Teachers’ pedagogical content knowledge (PCK) is a complex, multifaceted construct that is widely seen as foundational to the act of teaching. In this synthesis, we investigated how the National Science Foundation’s (NSF’s) recent research investments have advanced understanding and supported the development of teachers’ PCK in PK–12 mathematics and science education. In the 5 years from 2011 to 2015, NSF’s Discovery Research PK–12 program (DRK-12) funded or cofunded 27 projects relating to PCK, totaling $62 million awarded. These 27 DRK-12 projects primarily applied correlational/observational and longitudinal methods (rather than quasi-experimental or experimental methods), often targeting teaching in the middle school grades. Our synthesis of empirical findings focused on how these projects studied PCK, including its measurement, development, and relationship to teaching and student learning. Link to PDF: https://www.air.org/sites/default/files/2022-05/Teachers-Pedagogical-Content-Knowledge-in-Math-and-Science-April-2022.pdf 

The report summarizes the results from recent research and development projects that focused on modeling and simulations in science education. The Discovery Research PreK-12 (DRK-12) program of the National Science Foundation funded these projects as part of its mission to support the teaching and learning of science, technology, engineering, and mathematics (STEM) in grades PreK12 through innovative educational approaches.1 This report synthesizes findings from 33 articles produced by 18 DRK-12 grants awarded from 2011 to 2015, all of which funded development of resources or instructional practices to support student modeling in PreK-12 science education. This synthesis had two broad purposes: to describe 18 modeling-focused DRK-12 projects with respect to the resources they studied and the methods they used, and to summarize the new knowledge these projects produced related to modeling instruction. Link to PDF: https://www.air.org/sites/default/files/2022-05/Modeling-in-Scientific-Education-Synthesis-April-2022.pdf 

Proteins in the cellular milieu reside in environments crowded by macromolecules and other solutes. Although crowding can significantly impact the protein folded state stability, most experiments are conducted in dilute buffered solutions. To resolve the effect of crowding on protein stability, we use¹⁹F nuclear magnetic resonance spectroscopy to follow the reversible, two‐state unfolding thermodynamics of the N‐terminal Src homology 3 domain of theDrosophilasignal transduction protein drk in the presence of polyethylene glycols (PEGs) of various molecular weights and concentrations. Contrary to most current theories of crowding that emphasize steric protein–crowder interactions as the main driving force for entropically favored stabilization, our experiments show that PEG stabilization is accompanied by significant heat release, and entropy disfavors folding. Using our newly developed model, we find that stabilization by ethylene glycol and small PEGs is driven by favorable binding to the folded state. In contrast, for larger PEGs, chemical or soft PEG–protein interactions do not play a significant role. Instead, folding is favored by excluded volume PEG–protein interactions and an exothermic nonideal mixing contribution from release of confined PEG and water upon folding. Our results indicate that crowding acts through molecular interactions subtler than previously assumed and that interactions between solution components with both the folded and unfolded states must be carefully considered.

 

Teacher education has begun to embrace the use of 360 videos to improve preservice teachers' (PSTs) engagement and immersion. While recent research on such use is promising overall, there are specific questions that have been left unanswered about the construct of presence in 360 videos. More specifically, research has yet to fully explore how video delivery devices and PST characteristics may impact presence. The purpose of this study was to respond to this gap in the literature by examining PST major, delivery device (ie, head mounted display vs. flat screen), and the interaction between the two in informing presence. A total of 93 PSTs watched 360 videos and then completed a questionnaire. Findings indicated that presence in head‐mounted displays was related to emotions and agency. Conversely, presence with flat screens meant familiarity and control. Moreover, PST major was a predictor of presence, suggesting that 360 videos should be personalized according to PST career and professional goals. Finally, the interaction effect of preparing to teach K‐12 mathematics and wearing a head‐mounted display had a negative and statistically significant effect on participants' perceived presence, thus indicating a non‐cumulative effect.

What is already known about this topic

360 videos are increasingly used to support preservice teacher training.

360 videos for teacher education foster immersion, presence, and noticing skills.

What this paper adds

Empirical evidence that 360 videos experienced with head‐mounted display facilitate agency and emotional involvement.

Empirical evidence that 360 videos experienced with flat screens facilitate feelings of control.

Data showed that preservice teachers' content area (math) was a positive predictor of presence in 360 videos.

Implications for practice and/or policy

Head‐mounted displays show promise as a delivery mode for 360 videos in teacher education.

360 videos should be personalized according to PST career and professional goals.

The eXtended Reality Presence Scale is confirmed as a robust instrument to measure presence in immersive environments.

More research is needed to evaluate the scalability of this approach in other contexts.

 

Research on how coaches talk with teachers during coaching cycles is underdeveloped. We analyzed 1,649 discourse moves from 24 mathematics content-focused coaching cycles to determine the extent to which coaches’ discursive tendencies vary. We explored variation between coaches, between planning and debriefing conversations, and between cycles for the same coach–teacher pair. Findings indicate there existed significant variability in the coaches’ discourse moves during coaching cycles. We also found discursive differences from planning to debriefing meetings, noting that coaches were more directive and less reflective in planning conversations compared with debriefing conversations. Across multiple coaching cycles, we found variation across coaches, with one coach increasing the prevalence of directive moves across four planning conversations and another increasing the prevalence of reflective moves across four debriefing conversations. Although we focus on mathematics coaches, the findings and methodology may be applicable to other disciplines.

 

Educational policies exist as part of complex systems of many policies, all of which science teachers must make sense before using in practice. Using Actor-Network Theory to view policy translation in assemblages, we examine how networked actors mediate teachers’ policy play. Drawing on ethnographic methods and post-structural analytic tools, we identified four mediating actors: espoused practices, learning events, administrator relationships, and communities of practice. These actors interact in the assemblage to mediate teachers’ policy dilemmas and policy responses, as they play with policies. Our findings indicate a need to look more closely at the interactions of policies with one another in teachers’ policy play, policy dilemmas as learning opportunities, the importance of social relationships with administrators in teachers’ policy play, and the dangers of lethal fidelity in adoption. We see these findings as tools to assist teacher educators in planning for future teacher learning around their role as translators and implementers of policy.

 

Place value concepts were measured longitudinally from kindergarten (2017) to first grade (2018) in a diverse sample (n = 279;M_age = 5.76 years,SD = 0.55; 135 females; 41% Black, 38% White, 8% Asian, 12% Latino). Children completed three syntactic tasks that required an explicit understanding of base‐10 symbols and three approximate tasks that could be completed without this explicit understanding. Approximate performance was significantly better in both age groups. A factor analysis confirmed that syntactic and approximate tasks tapped separate latent variables in kindergarten, but not in first grade. Path analyses indicated that only kindergarten approximate performance predicted overall first‐grade place value understanding. These findings suggest that explicit understanding of base‐10 principles develops from implicit, partial knowledge of multidigit numbers.

 

This study sought to explore math and science teacher educators' use of various media to represent practice within methods courses. There is little understanding of why certain media is used over other representations and the rationale for these choices. Specifically, the study focused on the prevalence and familiarity of teacher educators with comics and animations, standard videos, and 360 videos. This mixed methods study utilized a survey and interviews to ascertain math and science teacher educators' level of familiarity and perceived usefulness of representations of practice. Results indicate that standard video is by far the most used representation of practice in methods classes with three themes explaining this finding: access to representations of practice, dimensions of representation, and pertinacity of using representations. Familiarity with representations of practice relates to teacher educators' perceptions of access thereby indicating a need for teacher educators to have better access to representations. Implications of this study include supporting current literature about the relationship between the level of familiarity and perceived usefulness in media along with the potential need for a central platform that houses these representations of practice resources for teacher educators.