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1. Challenge: COSMOS: A city-scale programmable testbed for experimentation with advanced wireless

   Raychaudhuri, D; Seskar, I.; Zussman, G.; Korakis, T.; Kilper, D.; Chen, T.; Kolodziejski, J.; Sherman, M.; Kostic, Z.; Gu, X.; et al (January 2020, ACM MobiCom '20)

   This paper focuses on COSMOS ś Cloud enhanced Open Software defined MObile wireless testbed for city-Scale deployment. The COSMOS testbed is being deployed in West Harlem (New York City) as part of the NSF Platforms for Advanced Wireless Research (PAWR) program. It will enable researchers to explore the technology łsweet spotž of ultra-high bandwidth and ultra-low latency in the most demanding real-world environment. We describe the testbed’s architecture, the design and deployment challenges, and the experience gained during the design and pilot deployment. Specifically, we describe COSMOS’ computing and network architectures, the critical building blocks, and its programmability at different layers. The building blocks include software-defined radios, 28 GHz millimeter-wave phased array modules, optical transport network, core and edge cloud, and control and management software. We describe COSMOS’ deployment phases in a dense urban environment, the research areas that could be studied in the testbed, and specific example experiments. Finally, we discuss our experience with using COSMOS as an educational tool. 

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2. The Effects of a Modeling and Computational Thinking Professional Development Program on STEM Educators’ Perceptions toward Teaching Science and Engineering Practices

   https://doi.org/10.3390/educsci12080570  

   Colclasure, Blake C.; Durham Brooks, Tessa; Helikar, Tomáš; King, Scott J.; Webb, Audrey (August 2022, Education Sciences)

   Teachers’ integration of the Next Generation Science Standards and corresponding Science and Engineering Practices (SEPs) illustrate current science education reform in the United States. Effective teacher professional development (PD) on SEPs is essential for reform success. In this study, we evaluated the Nebraska STEM Education Conference, a PD program for middle school, high school, and first- and second-year post-secondary STEM teachers. This SEP-oriented PD program focused predominantly on the SEPs ‘developing and using models’ and ‘using mathematics and computational thinking.’ An electronic survey was used to measure participants’ (n = 45) prior integration of SEPs, influential factors and barriers to using SEPs, and changes to interest and confidence in using SEPs as a result of attending the PD program. Our results showed that teachers had limited prior use of SEPs in their teaching. Student interest and learning outcomes were the factors found to be most influential to teachers’ use of SEPs, while limited knowledge, confidence, and resources were the most commonly identified barriers. As a result of attending the PD program, participants significantly improved their confidence and interest to incorporate SEPs. We recommend continued SEP-oriented PD to foster successful NGSS integration and to advance reforms in science education. 

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3. Improving STEM education: The design and development of a K-12 STEM observation protocol (STEM-OP).

   Dare, E.A.; Hiwatig, B.; Karatithamkul, K.; Ellis, J.A.; Roehrig, G.H.; Ring-Whalen, E.A.; Rouleau, M.D.; Faruqi, F.; Rice, C.; Titu, P.; et al (January 2021, ASEE Annual Conference proceedings)

   null (Ed.)

   Integrated approaches to teaching science, technology, engineering, and mathematics (commonly referred to as STEM education) in K-12 classrooms have resulted in a growing number of teachers incorporating engineering in their science classrooms. Such changes are a result of shifts in science standards to include engineering as evidenced by the Next Generation Science Standards. To date, 20 states and the District of Columbia have adopted the NGSS and another 24 have adopted standards based on the Framework for K-12 Science Education. Despite the increased presence of engineering and integrated STEM education in K-12 education, there are several concerns to consider. One concern is the limited availability of observation instruments appropriate for instruction where multiple STEM disciplines are present and integrated with one another. Addressing this concern requires the development of a new observation instrument, designed with integrated STEM instruction in mind. An instrument such as this has implications for both research and practice. For example, research using this instrument could help educators compare integrated STEM instruction across grade bands. Additionally, this tool could be useful in the preparation of pre-service teachers and professional development of in-service teachers new to integrated STEM education and formative learning through professional learning communities or classroom coaching. The work presented here describes in detail the development of an integrated STEM observation instrument that can be used for both research and practice. Over a period of approximately 18-months, a team of STEM educators and educational researchers developed a 10-item integrated STEM observation instrument for use in K-12 science and engineering classrooms. The process of developing the instrument began with establishing a conceptual framework, drawing on the integrated STEM research literature, national standards documents, and frameworks for both K-12 engineering education and integrated STEM education. As part of the instrument development process, the project team had access to over 2000 classroom videos where integrated STEM education took place. Initial analysis of a selection of these videos helped the project team write a preliminary draft instrument consisting of 52 items. Through several rounds of revisions, including the construction of detailed scoring levels of the items and collapsing of items that significantly overlapped, and piloting of the instrument for usability, items were added, edited, and/or removed for various reasons. These reasons included issues concerning the intricacy of the observed phenomenon or the item not being specific to integrated STEM education (e.g., questioning). In its final form, the instrument consists of 10 items, each comprising four descriptive levels. Each item is also accompanied by a set of user guidelines, which have been refined by the project team as a result of piloting the instrument and reviewed by external experts in the field. The instrument has shown to be reliable with the project team and further validation is underway. This instrument will be of use to a wide variety of educators and educational researchers looking to understand the implementation of integrated STEM education in K-12 science and engineering classrooms. 

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4. Improving Integrated STEM Education: The Design and Development of a K-12 STEM Observation Protocol (STEM-OP) (RTP)

   Dare, E. A.; Hiwatig, B.; Keratithamkul, K.; Ellis, J. A.; Roehrig, G. H.; Ring-Whalen, E. A.; Rouleau, M. D.; Faruqi, F.; Rice, C.; Titu, P.; et al (January 2021, ASEE Annual Conference proceedings)

   null (Ed.)

   Integrated approaches to teaching science, technology, engineering, and mathematics (commonly referred to as STEM education) in K-12 classrooms have resulted in a growing number of teachers incorporating engineering in their science classrooms. Such changes are a result of shifts in science standards to include engineering as evidenced by the Next Generation Science Standards. To date, 20 states and the District of Columbia have adopted the NGSS and another 24 have adopted standards based on the Framework for K-12 Science Education. Despite the increased presence of engineering and integrated STEM education in K-12 education, there are several concerns to consider. One concern is the limited availability of observation instruments appropriate for instruction where multiple STEM disciplines are present and integrated with one another. Addressing this concern requires the development of a new observation instrument, designed with integrated STEM instruction in mind. An instrument such as this has implications for both research and practice. For example, research using this instrument could help educators compare integrated STEM instruction across grade bands. Additionally, this tool could be useful in the preparation of pre-service teachers and professional development of in-service teachers new to integrated STEM education and formative learning through professional learning communities or classroom coaching. The work presented here describes in detail the development of an integrated STEM observation instrument - the STEM Observation Protocol (STEM-OP) - that can be used for both research and practice. Over a period of approximately 18-months, a team of STEM educators and educational researchers developed a 10-item integrated STEM observation instrument for use in K-12 science and engineering classrooms. The process of developing the STEM-OP began with establishing a conceptual framework, drawing on the integrated STEM research literature, national standards documents, and frameworks for both K-12 engineering education and integrated STEM education. As part of the instrument development process, the project team had access to over 2000 classroom videos where integrated STEM education took place. Initial analysis of a selection of these videos helped the project team write a preliminary draft instrument consisting of 79 items. Through several rounds of revisions, including the construction of detailed scoring levels of the items and collapsing of items that significantly overlapped, and piloting of the instrument for usability, items were added, edited, and/or removed for various reasons. These reasons included issues concerning the intricacy of the observed phenomenon or the item not being specific to integrated STEM education (e.g., questioning). In its final form, the STEM-OP consists of 10 items, each comprising four descriptive levels. Each item is also accompanied by a set of user guidelines, which have been refined by the project team as a result of piloting the instrument and reviewed by external experts in the field. The instrument has shown to be reliable with the project team and further validation is underway. The STEM-OP will be of use to a wide variety of educators and educational researchers looking to understand the implementation of integrated STEM education in K-12 science and engineering classrooms. 

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5. A Professional Development Model to Integrate Computational Thinking Into Middle School Science Through Codesigned Storylines

   Biddy, Q.; Gendreau Chakarov, A.; Bush, J.; Hennessy Elliott, C.; Jacobs, J.; Recker, M.; Sumner, T.; Penuel, W. (March 2021, Contemporary issues in technology and teacher education)

   This article describes a professional development (PD) model, the CT-Integration Cycle, that supports teachers in learning to integrate computational thinking (CT) and computer science principles into their middle school science and STEM instruction. The PD model outlined here includes collaborative design (codesign; Voogt et al., 2015) of curricular units aligned with the Next Generation Science Standards (NGSS) that use programmable sensors. Specifically, teachers can develop or modify curricular materials to ensure a focus on coherent, student-driven instruction through the investigation of scientific phenomena that are relevant to students and integrate CT and sensor technology. Teachers can implement these storylines and collaboratively reflect on their instructional practices and student learning. Throughout this process, teachers may develop expertise in CT-integrated science instruction as they plan and use instructional practices aligned with the NGSS and foreground CT. This paper describes an examination of a group of five middle school teachers’ experiences during one iteration of the CT-Integration Cycle, including their learning, planning, implementation, and reflection on a unit they codesigned. Throughout their participation in the PD, the teachers expanded their capacity to engage deeply with CT practices and thoughtfully facilitated a CT-integrated unit with their students. 

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