Skip to main content

Community Repository Search Results

resource project Museum and Science Center Programs
The New York Hall of Science (NYSCI), will recruit and support two postdoctoral fellows, who will spend 24 months conducting research in residence with NYSCI's diverse staff, audiences, and local community. This fellowship program is designed to support the postdoctoral researchers as they develop and pursue independent lines of research on equitable and inclusive informal STEM learning experiences.
DATE: -
TEAM MEMBERS: Katherine McMillan Susan Letourneau
resource project Public Programs
While there is a growing commitment in ISL to broadening participation in STEM, genuine diversity cannot be attained if current efforts continue to revolve around a dominant paradigm. This research synthesis project will review, summarize, and interpret existing research and knowledge on non-Western STEM knowledge, worldviews, and ways of knowing.
DATE: -
TEAM MEMBERS: Isabel Hawkins Hsin-Yi Chien Anne Holmes Verónica García-Luis Melissa Cuevas
resource project Museum and Science Center Exhibits
Over the past few decades, the science museum field has been working toward better understanding of and approaches to designing exhibits that reflect more diverse ways of learning and knowing, and support broader participation in STEM and informal STEM learning. This project, led by the local Hawaiian community organization Institute for Native Pacific Education and Culture (INPEACE), will develop and study a Native Hawaiian/Pacific Islander (NHPI) Indigenous-led exhibit design framework.
DATE: -
TEAM MEMBERS: Maile Keliipio-Acoba
resource project Media and Technology
This project engages pre-college Latinx, Black, and Indigenous learners, educators, and collaborating undergraduates in an international, project-based learning and media-making community in areas of science, technology, engineering, and mathematics (STEM). The project addresses key challenges including broadening participation in informal STEM learning, developing capacity for leading informal STEM programs, and building stronger connections between STEM learning and personal and social identity formation during adolescence. The project’s community of participants is an asset-based learning environment that treats each participant, their background, skills, and interests as uniquely beneficial to the whole. Led by mentors at each hub (teachers, leaders from science organizations, or other out-of-school learning environments), participants collaborate with peers from the US and from other countries. The collaborations encompass a broad spectrum of STEM projects. Participants also create digital media to communicate their projects. The project activities reflect a focus on STEM content, collaboration, and communication, in a global context that includes school-age learners from the US and peers from Central and South America, the Middle East, Asia, and Sub-Sahara. The combination of the sophisticated STEM competencies skills for collaborating across international and cultural boundaries, and media-savvy communication abilities are essential to the nation’s future STEM workforce and to building a scientifically vibrant citizenry.

The project addresses two primary research questions co-developed with teachers and other informal science providers. The first research question involves understanding and optimizing conditions for broadening participation through this type of distributed or virtual collaboration across boundaries of culture, race, gender, ability, nationality, and socioeconomic status. The project features a design experiment by which the overall community of participants comprises four separate hubs, each hosted by the different project partners (primarily teachers). Educators devise, test, and revise alternative designs for organizing STEM collaborations. Publication of these teacher-led designs and their evaluation are among the primary outputs of the project. The designs modify and improve a template developed under this project’s proof-of-concept precursor (NSF1612824). The second research question addresses how growth in STEM abilities, collaboration, and communication mutually reinforce adolescent personal and social identity formation. Participating students in the US will intentionally reflect heterogeneous backgrounds. The project analysis will focus on whether cultural and national cross-boundary collaboration can strengthen the development of learners' personal identity and academic performance. The project methodology relies heavily on quantitative ethnography and epistemic network analysis. This approach enables the creation of visual models that highlight the presence or absence of connections between constructs relevant to each research question, along with changes between and within groups. The constructs include variations of autonomy, competence, and connection (pillars of self-determination theory) in tracing identity formation and STEM abilities. The quantitative ethnography approach provides statistically reliable scaffolding and insights about the hub designs and their efficacy in promoting goals of broadening participation and fostering mutually reinforcing STEM competencies and identity formation. This type of virtual collaboration, crossing boundaries of culture, nationality, ethnicity, age, gender, economic strata, or ability, can realistically be expected to play a significant role in next-generation learning environments, especially through out-of-school activities. The project is expected to reach 120 U.S. and 80 non-U.S. students annually. Research findings, design principles and curricula will be widely disseminated to researchers, designers, program developers, informal science institutions and community organizations.
DATE: -
TEAM MEMBERS: Eric Hamilton Nastassia Jones Danielle Espino Seung Lee
resource project Public Programs
Stark inequities evident in the low representation of Black women in Science, Technology, Engineering, Mathematics, and Medicine (STEMM) careers persist despite considerable investment in the diversification of the education-to-workplace STEMM pipeline. College participation rates of Black women measure 4-5% of all degrees in biological and physical sciences, 2-3% of degrees in computer science and math, and roughly 1% in engineering. Ultimately, Black women make up only 2.5% of the workforce in STEMM-related fields, indicating that they chronically experience stalled professional advancement. Because there are so few longitudinal studies in either formal or informal settings, educators and researchers lack critical insights into why BA/BS credentialed Black women drop out of STEMM careers at high rates upon entering the workforce. This Research in Service to Practice project will conduct a longitudinal examination of key professional outcomes and life trajectories among adult Black women who enrolled Women in Natural Sciences (WINS), a 40-year-old out-of-school time (OST) high school STEM enrichment program. Prior research on WINS documents that alumnae outperform national averages on all metrics related to STEMM advancement up through college graduation. This study will test the hypothesis that such success continues for these cohorts as they pursue life goals and navigate the workforce. Findings from this study will promote the progress of science, pivotal to NSF’s mission as the project builds knowledge about supportive and frustrating factors for Black women in STEMM careers. Strategic impact lies in the novel participant-centered research methods that amplify Black women’s voices and increase both accuracy and equity in informal STEM learning research.

This research probes the experiences of Black women at a critical phase of their workforce participation when BS/BA credentialed WINS alumnae establish their careers (ages 26-46). The team will conduct a longitudinal comparative case study of outcomes and life trajectories among 20 years of WINS cohorts (1995-2015). Research questions include (1) What do the life-journey narratives of WINS alumnae in adulthood reveal about influential factors in the socio-cultural ecological systems of Black women in STEMM? (2) What are the long-term outcomes among WINS women regarding education, STEMM and other careers, socio-economic status, and STEMM self-efficacy and interest? How do these vary? (3) What salient program elements in WINS are highlighted in alumnae narratives as relevant to Black women’s experiences in adulthood? How do these associations vary? (4) How do selected outcomes (stated in RQ2) and life story narratives among non-enrolled applicants compare to program alumnae? and (5) How do salient components in the WINS program associate with socio-cultural factors in regard to Black women’s careers and other life goals? Participants include 100 Black WINS alumnae as an intervention group and a matched comparison group of 100 Black women who successfully applied to the WINS program but did not or could not enroll. Measurable life outcomes and life trajectory narratives with maps of experiences from both groups will be studied via a convergent mixed methods design inclusive of quantitative and qualitative analyses. Comparisons of outcomes and trajectories will be made between the study groups. Further, associations between alumnae’s long-term outcomes and how they correlate their WINS experiences with other socio-cultural factors in their lives will be identified. It is anticipated that findings will challenge extant knowledge and pinpoint the most effective characteristics of and appropriate measures for studying lasting impacts of OST STEMM programs for Black women and girls. The project is positioned to contribute substantially to national efforts to increase participation of Black women in STEMM.
DATE: -
TEAM MEMBERS: Ayana Allen-Handy Jacqueline Genovesi Loni Tabb
resource project Public Programs
Science identity has been shown to be a necessary precondition to academic success and persistence in science trajectories. Further, science identities are formed, in large part, due to the kinds of access, real or perceived, that (racialized) learners have to science spaces. For Black and Latinx youth, in particular, mainstream ideas of science as a discipline and as a culture in the US recognize and support certain learners and marginalize others. Without developing identities as learners who can do science, or can become future scientists, these young people are not likely to pursue careers in any scientific field. There are demonstrable links between positive science identities and the material and social resources provided by particular places. Thus, whether young people can see themselves as scientists, or even feel that they have access to science practices, also depends on where they are learning it. The overarching goal of this project is to broaden participation of Black and Latinx youth in science by deepening our understanding of both science identities and how science learning spaces may be better designed to support the development of positive science identities of these learners. By deepening the field’s knowledge of how science learning spaces shape science identities, science educators can design more equitable learning spaces that leverage the spatial aspects of program location, culturally relevant curriculum, and participants’ lived experiences. A more expansive understanding of positive science identities allows educators to recognize these in Black and Latinx learners, and direct their continued science engagements accordingly, as positive identities lead to greater persistence in science. This project is a collaboration between researchers at New York University and those at a New York City informal science organization, BioBus. It is funded by the Advancing Informal STEM Learning (AISL) Program which seeks to advance new approaches to, and evidence-based understanding of, the design and development of STEM learning in informal environments.

This participatory design research project will compare three different formats, in different settings, of afterschool science programming for middle schoolers: one located in a lab space on the campus of a nearby university, one located in the public middle school building of participating students, and one aboard a mobile science lab. For purposes of this study, the construct of “setting” refers to the dimensions of geographic location, built physical environment, and material resources. Setting is not static, but instead social and relational: it is dynamically (co)constructed and experienced in activity by individuals and in interaction by groups of individuals. Therefore, the three BioBus programming types allow for productive comparison not only because of their different geographic locations, built environments, and material resources (e.g., scientific tools), but also the existing relationships learners may have with these places, as well as the instructional designs and pedagogical practices that BioBus teaching scientists use in each. This project uses a design-based research approach to answer the following research questions: (1) How do the settings of science learning shape science identity development? What are different positive science identities that may emerge from these relationships? And (2) What are ways to leverage different spatial aspects of informal science programming and instruction to support positive science identities? The study uses ethnographic and micro-analytic methods to develop better understandings of the relationships between setting and science identity development, uncover a broad range of types of positive science identities taken up by our Black and Latinx students, and inform informal science education to design for and leverage spatial aspects of programming and instruction. Findings will contribute to a systematic knowledge base bringing together spatial aspects of informal science education and science identity and identity development, and provide new tools for informal science educators, including design principles for incorporating spatial factors into program and lesson planning.
DATE: -
TEAM MEMBERS: Jasmine Ma Latasha Wright Roya Heydari
resource project Exhibitions
This project is designed to support collaboration between informal STEM learning (ISL) researchers, designers, and educators with sound researchers and acoustic ecologists to jointly explore the role of auditory experiences—soundscapes—on learning. In informal STEM learning spaces, where conversation advances STEM learning and is a vital part of the experience of exploring STEM phenomena with family and friends, attention to the impacts of soundscapes can have an important bearing on learning. Understanding how soundscapes may facilitate, spark, distract from, or even overwhelm thinking and conversation will provide ISL educators and designers evidence to inform their practice. The project is structured to reflect the complexity of ISL audiences and experiences; thus, partners include the North Park Village Nature Center located in in a diverse immigrant neighborhood in Chicago; Wild Indigo, a Great Lakes Audubon program primarily serving African American visitors in Midwest cities; an after-school/summer camp provider, STEAMing Ahead New Mexico, serving families in the rural southwest corner of New Mexico, and four sites in Ohio, MetroParks, Columbus Zoo and Aquarium, Franklin Park Conservatory and Botanical Gardens, and the Center of Science and Industry.

Investigators will conduct large-scale exploratory research to answer an understudied research question: How do environmental sounds impact STEM learning in informal learning spaces?  Researchers and practitioners will characterize and describe the soundscapes throughout the different outdoor and indoor exhibit/learning spaces. Researchers will observe 800 visitors, tracking attraction, attention, dwell time, and shared learning. In addition to observations, researchers will join another 150 visitors for think-aloud interviews, where researchers will walk alongside visitors and capture pertinent notes while visitors describe their experience in real time. Correlational and cluster analyses using machine learning algorithms will be used to identify patterns across different sounds, soundscapes, responses, and reflections of research participants. In particular, the analyses will identify characteristics of sounds that correlate with increased attention and shared learning. Throughout the project, a team of evaluators will monitor progress and support continuous improvement, including guidance for developing culturally responsive research metrics co-defined with project partners. Evaluators will also document the extent to which the project impacts capacity building, and influences planning and design considerations for project partners. This exploratory study is the initial in a larger research agenda, laying the groundwork for future experimental study designs that test causal claims about the relationships between specific soundscapes and visitor learning. Results of this study will be disseminated widely to informal learning researchers and practitioners through workshops, presentations, journal articles, facilitated conversations, and a short film that aligns with the focus and findings of the research.
DATE: -
TEAM MEMBERS: Martha Merson Justin Meyer Daniel Shanahan
resource project Exhibitions
The Science Museum of Minnesota (SMM) will collaborate with four community organizations serving Black, Indigenous, and People of Color (BIPOC) audiences to research and develop a novel outdoor makerspace that engages families in STEM learning. A makerspace is a place where people work together on creative, interest driven projects. In working with BIPOC families, the project addresses three forms of historical (and present day) exclusion of community participants, including participation in the design of informal learning experiences, participation in such activities, and overall engagement in STEM. The project aims to develop activities that foster STEM learning using natural materials in an outdoor makerspace, informed through robust collaboration with local communities. This project will result in an outdoor makerspace at SMM that will include 3-4 settings (approximately 2500 square feet total) that house and support multiple making activities in an outdoor context. The proposed work will contribute to advancing knowledge through exploring how BIPOC families define learning in makerspaces and how younger children can be fully engaged in family learning. The project will share the inclusive design and community collaboration practices developed through this work with other museums, maker educators, and other community organizations that can develop or expand their own outdoor makerspaces in ways that will respect and reflect BIPOC families’ perspectives.

BIPOC families will join museum staff as contributors in the development and iteration of an outdoor makerspace and collaborators in the development of generalized design principles and dissemination of the research. Visitor-captured video of engagement in the outdoor makerspace, surveys, and memos from design meetings with community partners serve as the foundation for the process of aligning design and development of outdoor informal science education spaces with community needs and values. All research activities will be guided by a culturally responsive research framework and use strategies to ensure the multicultural validity such as video meaning-making with family research participants and member-checking instruments, data analyses, and findings with Design Partners. Project research will address three questions: (1) What are the characteristics of family learning in an outdoor nature-situated makerspace, including how BIPOC families identify and describe STEM learning and how outdoor spaces can be built to support BIPOC families’ perspectives? (2) How can the space be built to support multi-age families to engaged in making, including a focus on what design elements support preschool learner’s engagement and sustained participation by other family members? and (3) How do the design principles for making with widely available materials translate from indoor to outdoor spaces and materials? Research findings, design principles and community engagement guides will be widely disseminated to researchers, designers, program developers, informal science institutions and community organizations.
DATE: -
resource project Professional Development, Conferences, and Networks
Centering Native Traditional Knowledge within informal STEM education programs is critical for learning for Native youth. In co-created, place-based learning experiences for Native youth, interweaving cultural traditions, arts, language, and community partnerships is vital for authentic, meaningful learning. Standardized STEM curricula and Western-based pedagogies within the mainstream and formal education systems do not reflect the nature of Native STEM knowledge, nor do they make deep connections to it. The absence of this knowledge base can reinforce a deficit-based STEM identity, which can directly impact Native youths’ participation and engagement in STEM. Reframing STEM education for Native youth to prioritize the vitality of community and sustainability requires active consideration of what counts as science learning and who serves as holders and conduits of STEM knowledge. As highly regarded holders of traditional and western STEM knowledge, Native educators and cultural practitioners are critical for facilitating Native youths’ curiosity and engagement with STEM. This Innovations in Development project is Native-led and centers Native knowledge, voice, and contributions in STEM through a culturally based, dual-learning approach that emphasizes traditional and western STEM knowledge. Through this lens, a network of over a dozen tribal nations across 20 U.S. states will be established to support and facilitate the learning of Traditional and Western STEM knowledge in a culturally sustaining manner. The network will build on existing programs and develop a set of unique, interconnected, and synchronized placed-based informal STEM programs for Native youth reflecting the distinctive cultural aspects of Native American and Alaska Native Tribes. The network will also involve a Natives-In-STEM Role Models innovation, in which Native STEM professionals will provide inspiration to Native youth through conversations about their journeys in STEM within cultural contexts. In addition, the network will cultivate a professional network of STEM educators, practitioners, and tribal leaders. Network efforts and the formative evaluation will culminate in the development and dissemination of a community-based, co-created Framework for Informal STEM Education with Native Communities.

Together with Elders and other contributors of each community, local leads within the STEM for Youth in Native Communities (SYNC) Network team will identify and guide the STEM content topics, as well as co-create and implement the program within their sovereign lands with their youth. The content, practitioners, and programming in each community will be distinct, but the community-based, dual learning contextual framework will be consistent. Each community includes several partner organizations poised to contribute to the programming efforts, including tribal government departments, tribal and public K-12 schools, tribal colleges, museums and cultural centers, non-profits, local non-tribal government support agencies, colleges and universities, and various grassroots organizations. Programmatic designs will vary and may include field excursions, summer and after school STEM experiences, and workshops. In addition, the Natives-In-STEM innovation will be implemented across the programs, providing youth with access to Native STEM professionals and career pathways across the country. To understand the impacts of SYNC’s efforts, an external evaluator will explore a broad range of questions through formative and summative evaluations. The evaluation questions seek to explore: (a) the extent to which the culturally based, dual learning methods implemented in SYNC informal STEM programs affect Native youths’ self-efficacy in STEM and (b) how the components of SYNC’s overall theoretical context and network (e.g., partnerships, community contributors such as Elders, STEM practitioners and professionals) impact community attitudes and behaviors regarding youth STEM learning. Data and knowledge gained from these programs will inform the primary deliverable, a Framework for Native Informal STEM Education, which aims to support the informal STEM education community as it expands and deepens its service to Native youth and communities. Future enhanced professional development opportunities for teachers and educators to learn more about the findings and practices highlighted in the Framework are envisioned to maximize its strategic impact.
DATE: -
TEAM MEMBERS: Juan Chavez Daniella Scalice Wendy Todd
resource project Professional Development, Conferences, and Networks
Diversity, equity, access, inclusion, and belonging-related change is often difficult to achieve in organizations. In the context of Informal STEM Learning (ISL), this results in inequitable opportunities for both ISL professionals and learners to engage in STEM environments and experiences. For people to thrive in these settings, creative and innovative approaches that address historical and current realities of intersectional marginalization and inequitable norms within informal STEM institutions are necessary to disrupt conventions, institutional barriers, and patterns of inequities. TERC and the Detroit Zoological Society will develop and implement an ISL Equity Resource Center (the Center). The Center will advance equity within the ISL field by cultivating a multi-sector, diverse learning community that designs and conducts evidence-based research and practice, including but not limited to equity-focused leadership, decision-making, theory, methods, project topic selection and design, and budget management.

The Center will cultivate lasting change in the ISL and broader STEM learning ecosystem via (a) sharing more inclusive, culturally relevant, and responsive ISE research and practice; (b) identifying scalable, equity-focused research findings useful in ISL programming; and (c) promoting greater public awareness of the importance of broadening participation in STEM. The Center's primary stakeholders are ISL professionals, including researchers, practitioners, and evaluators. The Center will maintain and expand a digital infrastructure to support innovation and sharing across the ISL field. Through its combined efforts, the Center will raise the visibility and impact of ISL equity-focused research and practice and its contributions to the overall STEM endeavor. The Center will also organize and host the biennial AISL Awardee Meeting. The Center is funded by the Advancing Informal STEM Learning program, which seeks to (a) advance new approaches to and evidence-based understanding of the design and development of STEM learning in informal environments; (b) provide multiple pathways for broadening access to and engagement in STEM learning experiences; (c) advance innovative research on and assessment of STEM learning in informal environments; and (d) engage the public of all ages in learning STEM in informal environments.
DATE: -
TEAM MEMBERS: Stephen Alkins Diane Miller Lisette Torres-Gerald Pati Ruiz
resource project Informal/Formal Connections
This project is expanding an effective mobile making program to achieve sustainable, widespread impact among underserved youth. Making is a design-based, participant-driven endeavor that is based on a learning by doing pedagogy. For nearly a decade, California State University San Marcos has operated out-of-school making programs for bringing both equipment and university student facilitators to the sites in under-served communities. In collaboration with four other CSU campuses, this project will expand along four dimensions: (a) adding community sites in addition to school sites (b) adding rural contexts in addition to urban/suburban, (c) adding hybrid and online options in addition to in-person), and (d) including future teachers as facilitators in addition to STEM undergraduates. The program uses design thinking as a framework to engage participants in addressing real-world problems that are personally and socially meaningful. Participants will use low- and high-tech tools, such as circuity, coding, and robotics to engage in activities that respond to design challenges. A diverse group of university students will lead weekly, 90-minute activities and serve as near-peer mentors, providing a connection to the university for the youth participants, many of whom will be first-generation college students. The project will significantly expand the Mobile Making program from 12 sites in North San Diego County to 48 sites across California, with nearly 2,000 university facilitators providing 12 hours of programming each year to over 10,000 underserved youth (grades 4th through 8th) during the five-year timeline.

The project research will examine whether the additional sites and program variations result in positive youth and university student outcomes. For youth in grades 4 through 8, the project will evaluate impacts including sustained interest in making and STEM, increased self-efficacy in making and STEM, and a greater sense that making and STEM are relevant to their lives. For university student facilitators, the project will investigate impacts including broadened technical skills, increased leadership and 21st century skills, and increased lifelong interest in STEM outreach/informal science education. Multiple sources of data will be used to research the expanded Mobile Making program's impact on youth and undergraduate participants, compare implementation sites, and understand the program's efficacy when across different communities with diverse learner populations. A mixed methods approach that leverages extant data (attendance numbers, student artifacts), surveys, focus groups, making session feedback forms, observations, and field notes will together be used to assess youth and university student participant outcomes. The project will disaggregate data based on gender, race/ethnicity, grade level, and site to understand the Mobile Making program's impact on youth participants at multiple levels across contexts. The project will further compare findings from different types of implementation sites (e.g., school vs. library), learner groups, (e.g., middle vs. upper elementary students), and facilitator groups (e.g., STEM majors vs. future teachers). This will enable the project to conduct cross-case comparisons between CSU campuses. Project research will also compare findings from urban and rural school sites as well as based on the modality of teaching and learning (e.g., in-person vs. online). The mobile making program activities, project research, and a toolkit for implementing a Mobile maker program will be widely disseminated to researchers, educators, and out-of-school programs.
DATE: -
TEAM MEMBERS: Edward Price Frank Gomez James Marshall Sinem Siyahhan James Kisiel Heather Macias Jessica Jensen Jasmine Nation Alexandria Hansen Myunghwan Shin
resource project Professional Development, Conferences, and Networks
Developing solutions to large-scale collective problems -- such as resilience to environmental challenges -- requires scientifically literate communities. However, the predominant conception of scientific literacy has focused on individuals, and there is not consensus as to what community level scientific literacy is or how to measure it. Thus, a 2016 National Academies of Sciences, Engineering, and Medicine report, “Science Literacy: Concepts, Contexts, and Consequences,” stated that community level scientific literacy is undertheorized and understudied. More specifically, the committee recommended that research is needed to understand both the i) contexts (e.g., a community’s physical and social setting) and ii) features of community organization (e.g., relationships within the community) that support community level science literacy and influence successful group action. This CAREER award responds to this nationally identified need by iteratively refining a model to conceptualize and measure community level scientific literacy. The model and metrics developed in this project may be applied to a wide range of topics (e.g., vaccination, pandemic response, genetically-modified foods, pollution control, and land-use decisions) to improve a community’s capacity to make scientifically-sound collective decisions. This CAREER award is funded by the Advancing Informal STEM Learning (AISL) and the EHR CORE Research (ECR) programs. It supports the AISL program goals to advance new approaches to, and evidence-based understanding of, the design and development of STEM learning in informal environments. It supports the ECR program goal to advance relevant research knowledge pertaining to STEM learning and learning environments.

The proposed research will conceptualize, operationalize, and measure community level scientific literacy. This project will use a comparative multiple case study research design. Three coastal communities, faced with the need to make scientifically-informed land-use decisions, will be studied sequentially. A convergent mixed methods design will be employed, in which qualitative and quantitative data collection and analyses are performed concurrently. To describe the i) context of each community case, this project will use qualitative research methods, including document analysis, observation, focus groups, and interviews. To measure the ii) features of community organization for each community case, social network analysis will be used. The results from this research will be disseminated throughout and at the culmination of the project through professional publications and conference presentations as well as with community stakeholders and the general public. The integrated education activities include a professional learning certificate for informal science education professionals and STEM graduate students. This certificate emphasizes high-quality community-engaged scholarship, placing students with partners such as museums, farmer’s markets, and libraries, to offer informal learning programs in their communities. This professional learning program will be tested as a model to provide training for STEM graduate students who would like to communicate their research to the public through outreach and extension activities.
DATE: -
TEAM MEMBERS: K.C. Busch