<p> Universities have increased the number of fully or partially online courses they offer to meet students' family, work-life, and academic needs. As a result of this shift, the HyFlex learning paradigm, which provides hybrid and flexible learning options, has gained traction in academia in recent years. The COVID-19 pandemic has altered the standards for academic levels of success in higher education for the foreseeable future. In order to offer a sense of belonging and sustain an equal or greater degree of engagement, instructors have been compelled to try and replicate the rich interaction of face-to-face situations in a virtual context. During the pandemic, the results of studies and surveys revealed a story of student dissatisfaction due to a lack of involvement, participation, sense of community, lack of faculty readiness, and technology concerns. Evidence from the past has supported the fact that synchronous online modality not only facilitates the tasks of a traditional face-to-face learning environment, but also has some distinct advantages over conventional approaches. Students' commitment to stay connected in the learning experience is linked to their sense of belonging to a learning cohort. It is vital to create a learning environment in which students feel a part of a learning community and actively participate in the learning process in order to foster knowledge generation. An Interactive Synchronous HyFlex model, intended to help students feel committed and engaged in their learning community through these uncertain times and beyond, is being explored as part of this research. The approach is studied using a Community of Inquiry (CoI) framework, as communities are a crucial part of effective student-centered learning settings. A convergent parallel mixed methods case study design was used to gain a deeper knowledge of the usefulness of the new HyFlex model under study. Students enrolled in the Interactive Synchronous HyFlex design thinking course during the Fall 2020 semester were the study's participants. The quantitative phase of the study looked into a) the students’ perception of overall teaching, social and cognitive presences in the HyFlex design thinking classroom; and b) if there was any change in students’ perception of community of inquiry based on their mode of participation (face-to-face/remote). The qualitative part of the study looked in-depth at the lived experiences of students in the HyFlex design thinking classrooms throughout the semester. The integration and interpretation of the two phases provides a positive student perspective of the Interactive Synchronous HyFlex model, and it helps to observe how the community of inquiry has played out in HyFlex design thinking classrooms. </p>

<p>This study examined how three different manipulations of a single policing stance affected the quality scores and matching performance in a biometric facial recognition system; it was conducted in three phases. In the first phase, the researcher collected qualitative survey data from active, sworn law enforcement officers in 15 states. In the second phase, the researcher collected quantitative data using a single facial recognition subject and a static body-worn camera mounted to an adjustable tripod. In the third phase, the researcher collected quantitative data from body-worn camera-equipped law enforcement officers who filmed a stationary target as they executed a series of specified movements from the interview stance. The second phase tested two different body-worn cameras: one that is popular among law enforcement agencies in the United States, the Axon Body 2; and one that is inexpensive and available to the general public via a popular internet commerce website. The third phase tested only the Axon Body 2. Results of the study showed that matching results are poor in a biometric system where the test body-worn camera was the sensor, with error rates as high as 100% when the body-worn camera wearer was in motion. The general conclusion of this study is that a body-worn camera is not a suitable sensor for a biometric facial recognition system at this time, though advances in camera technology and biometric systems may close the gap in the future. </p>

<p>The Next Generation Science Standards (NGSS Lead States, 2013) promote a new vision of K-12 science education that emphasizes the importance of integrating engineering practices into science education. Recent engineering studies have highlighted design approaches that focus on designers’ empathy, such as human-centered design (Hess & Fila, 2016a; Kouprie & Visser, 2009; Walther et al., 2017). Empathic engineering design approaches can help students understand how engineers understand various users’ contexts and develop effective design solutions. Furthermore, empathy is a key element in cross-cultural education (Gay, 2002; Webb et al., 2012) because it can help teachers create positive interactions with diverse students (Arghode et al., 2013; Warren, 2014). Empathy is an important attribute highlighted in both engineering and cross-cultural education. Therefore, it is necessary for teachers to comprehend and integrate the principles of Human-Centered Design (HCD) approaches to provide more authentic and holistic engineering education. </p> <p>This study explored elementary preservice teachers’ competence in planning and implementing an empathic engineering design lesson plan in cross-cultural STEM education by applying a module. The module consisted of a researcher-developed elementary science methods unit on designing empathic integrated STEM instruction. Using a convergent mixed methods design (Creswell & Clark, 2018) and 16 participants, this study investigated preservice teachers’ understanding of empathic integrated STEM instruction before and after the module. This study utilized the Interpersonal Reactivity Index (Davis, 1983) to examine preservice teachers’ levels of empathy and the Teaching Engineering Self-Efficacy Scale (Yoon et al., 2014) to measure their self-efficacy. For qualitative data, reflection papers, empathic design lesson plans, and interview transcripts were collected. Thematic analysis (Braun & Clark, 2006) was employed to identify patterns and relationships within the data.</p> <p>The analysis of a paired samples t-test and a related-samples Wilcoxon signed-rank test showed a significant difference between the means of preservice teachers’ self-efficacy scores before and after the module. However, there was no significant difference in the means of their empathy scores. According to qualitative data analysis, preservice teachers understood the role of empathy in both engineering and cross-cultural education. The module enhanced preservice teachers’ pedagogical strategies regarding empathic techniques and culturally and socially responsive pedagogies. Preservice teachers also discovered the benefits of empathic integrated STEM instruction including broadening one’s perspectives, understanding the value of inclusive designs, and enhancing students’ 21st century skills. After experiencing the module, they felt confident in integrating empathic integrated STEM instruction and recognizing potential challenges of implementation. The study findings show that empathic integrated STEM instruction can be a way to support preservice teachers’ understanding of engineering pedagogical strategies, culturally responsive pedagogy, and the features of integrated STEM instruction. </p>

<p>  </p> <p>At the highest level, this dissertation is a case study on how bias can become encoded into the tools used to measure a construct and into the very definition of the construct itself. In this case, the construct is spatial ability. This dissertation focuses on the validity and accuracy of spatial tests and illuminates gender bias that is interwoven with the history of spatial testing. </p> <p><br></p> <p>First, I present a critical analysis of the graphical imagery used in spatial tests and explain why the imagery may be unclear and lead the tests to be inaccurate. I analyzed a collection of research in which researchers modified the stimuli used in spatial tests and found that the tests became easier when the imagery was made clearer. Thus, I conclude that imagery presentation impacts test difficulty, a likely example of construct-irrelevant variance which may reduce the validity of some spatial skills assessments and introduce bias in favor of individuals with past experience in engineering graphics, who historically are more likely to be men. </p> <p><br></p> <p>Second, I make a critical review of gender differential research in spatial skills. I argue that the construct of “spatial ability” has been co-constructed with gender, in that it has been devised in a manner influenced by gender beliefs. Because of a preexisting belief that men had better spatial skills than women, some test creators “selectively bred” spatial instruments to produce the expected gender differences. Such instruments, including the very popular Mental Rotation Test (MRT), cannot validly assess between-group differences. Biological or evolutionary explanations for sex differences in spatial ability lack empirical evidence. Instead, the differences are rooted in the shaping of the construct of “spatial ability” to create the expected gender patterns. </p> <p><br></p> <p>Finally, I describe an experiment designed to investigate the hypothesis that using a spatial test with content from a feminized discipline will show different patterns in gender differences. Female engineering students outperformed males on the Digital Apparel Spatial Visualization Test (DASVT), while the male engineering students scored higher than the female students on the Purdue Spatial Visualization Test (PSVT:R). Students with relevant background experience scored better than students without experience on both assessments. The results demonstrate the shortcomings of using a single instrument to assess a concept as heterogeneous as spatial skills. I conclude this dissertation with a discussion of the implications of my work and recommendations for researchers and educators. </p>

<p>  </p> <p>Food system STEM projects have the capacity to motivate high school students in urban schools. This study explored food as a context to engage students because everyone interacts with food on a daily basis and has had cultural experiences related to food. An integrated STEM approach in combination with a systems thinking approach challenged students to make transdisciplinary connections, view problems from different perspectives, analyze complex relationships, and develop 21st-century and career skills (Hilimire et al., 2014; Nanayakkara et al., 2017). The purpose of this study was to describe and explain the relevance students perceive in Ag+STEM content by measuring high school students' self-efficacy, intrinsic value, attainment value, cost value, and utility value after participating in a food system STEM project. The study was informed by Eccles and Wigfield’s (2020) Situated Expectancy Value Theory. The convenience sample of this study was comprised of high school students from metropolitan area schools. High school students completed a food system STEM project with a food system context. Quantitative data was collected using the developed Food System Motivation questionnaire. Data were collected through a retrospective pre-test and a post-test. Descriptive statistics were used to analyze the data including means and standard deviations. Relationships were explored by calculating correlations.</p> <p>There were four conclusions from this study. First, high school students were somewhat interested, felt it was important to do well, and agreed there were costs regarding participation in the food system STEM project. Second, high school students reported higher personal and local utility value motivation after completing the food system STEM project. Third, high school students were somewhat self-efficacious in completing the project tasks and completing the project tasks informed by their cultural identity and experiences. Fourth, intrinsic value and attainment value motivation (independent variables) were related to personal and local utility value motivation and project and cultural self-efficacy motivation (dependent variables). Implications for practice and recommendations for future research were discussed.</p>

<h2>Abstract</h2><p dir="ltr">Currently, only 22% of high school graduates meet the basic requirements for one or more college courses in mathematics, science, reading, or English signifying fewer students with the skills to enter careers in science, technology, engineering, and mathematics (STEM) (Smithsonian Science Education Center, 2015). In contrast, science and engineering employment in the United States has grown more rapidly than the overall workforce and now represents 5% of all jobs which is projected to increase to 8% by 2029 (Khan et al., 2020). The current statistics represent a future labor force entering the labor market without the skills needed to obtain a large portion of future occupations. To bridge this gap, the U.S. Federal government outlined a vision with three goals to provide Americans access to high-quality STEM education to increase the skills of the future workforce (National Science & Technology Council, 2018). The three goals include 1) building a strong foundation for STEM literacy; 2) increasing diversity, equity, and inclusion in STEM; 3) preparing the STEM workers for the future (National Science & Technology Council, 2018). As the economy and workforce develop in future years, students will require a high-quality STEM education to enter this growing workforce to meet the goals of the federal government and the needs of future occupations. Robotic platforms are diverse and have the ability to provide students with instant feedback, integrate multiple subjects during the design challenge, and support self-efficacy development through mastery events where students practice skills until they receive a favorable result. Robotics in a life-centered context could interest a diverse range of young adults into STEM career fields. This study implements robotic learning activies in an assistive technology context which centers around improving the lives of living organisms.</p>

<p> The limited numbers of women in advanced mathematics courses is a critical factor hindering women’s academic and professional access to science, technology, engineering, and mathematics (STEM) fields. Informal learning environments have the potential to play a significant role in promoting the participation of girls and women in mathematics/STEM fields. However, research that addresses the intersection of informal education, mathematics education, and women’s studies is minimal. Specifically, little is known about informal educators’ lived experiences in facilitating girls’ learning. Based on four years of working alongside Laura, the founder of Girls Excelling in Math and Science (GEMS) clubs, I conducted a narrative inquiry that explored our boundary crossing experiences as we engaged in a GEMS collaboration. The exploration focused on Laura’s narratives of her past, present, and future experiences that shape her identity as an informal educator. During the exploration of Laura’s experiences, I reflected on and inquired about my own personal and professional experiences across multiple contexts that inform my evolving identity as an educator. The theoretical framework of this study is informed by feminist theory and boundary-crossing perspectives. Feminist theory guides me to perceive our narrative of experiences from a women’s perspective while the boundary-crossing framework provides an analytic lens to understand our interpersonal and intrapersonal boundary crossing experiences. Because of the nature of the narrative inquiry, data were co-constructed between Laura and me in various forms: interviews, field notes, family stories, autobiographical writing, documents, conversations, emails, etc. I employed Polkinghorne’s (1995) <em>narrative analysis </em>and <em>analysis of narrative</em> approaches to analyze data. First, I utilized a <em>narrative analysis </em>approach to generate three holistic plots: (1) narratives of becoming female educators, (2) boundary-crossing collaboration in the midst of GEMS, and (3) conceptualizing mathematics across multiple contexts. An<em> analysis of narrative</em> approach was used to generate themes that unfold the meanings of stories, moments, and events and configure the plot. In the findings, I portrayed the three plots which allowed me to rediscover and reconstruct our personal practical knowledge across the contexts. Building on the findings, I discuss how female educators’ narratives of experiences inform their personal practical knowledge, which empowers girls’ and women’s personal and social experiences in mathematics/STEM. Laura and I cross multiple boundaries engaging in collaboration which provides an example of the boundary crossing collaboration between mathematics education and informal education. Based on the findings, I describe how informal learning STEM environments provide potential spaces to implement alternative curricula to humanize mathematics. Two evolving mathematics-related tasks illustrate our experiences of humanizing mathematics in GEMS. This study is situated at the intersection of mathematics education, informal education, and women’s studies, which significantly impacted Laura, myself, and GEMS, the context in which this study took place. This study provides an example of the possibilities of building boundary-crossing collaborations between the mathematics education community and the informal education community to empower girls and women in mathematics/STEM. Drawing on this dissertation study, one future research direction focuses on implementing and further developing humanized mathematics curricula in informal learning environments. Another research direction is using intersectional feminist theory to understand women’s differences regarding multiple social constructs (e.g., race, gender, class, ethnicity) to explicate the dimensions of inequality women face in mathematics/STEM. The study also suggests future practical work for mathematics education to foster alternative ways of conceptualizing mathematics regarding curriculum and approach. Mathematics educators could contribute to creating a learning community and providing professional development opportunities to support informal educators. </p>

Upon IRB approval, a corpus of 1,192 texts consisting of three assignments written by a total of 1,736 first year engineering students was compiled, and 117 pedagogical materials were collected. Using an iterative quantitative-qualitative approach to written discourse analysis, instances of formulaic language (4- and 6-word sequences) were identified in the corpus; formulaic language was then coded for the rhetorical functions expected in problem statements as qualitatively identified in the pedagogical materials. Additionally, three discourse-based interviews were conducted with First-year Engineering Faculty. Interview data was coded for themes of effective communication and used to triangulate the findings from the corpus analysis.

<p>Professional engineers think and act in distinctive ways when addressing engineering problems. Students need to develop this reasoning or engineering thinking during their education. Unfolding the undergraduate students’ thinking is a necessary step in designing experiences and teaching materials that foster not only their understanding of engineering concepts but also their learning to think as professional engineers. While there are previous studies about the students' thinking in other disciplines, more research is needed in engineering. This three-study dissertation aims to further our comprehension of undergraduate students’ engineering thinking using an adapted version of the Engineering Habits of Mind (EHoM) model. Specifically, the dissertation’s studies work together to continue the research that addresses the question:<em> What are the characteristics of undergraduate students</em>’ <em>engineering thinking?</em></p> <p><br></p> <p>The first study used naturalistic inquiry to holistically explore the cognition associated with the EHoM of senior chemical engineering students when improving a chemical plant. The analysis of students’ interactions showed that their redesign process followed an iterative co-evolution of the problem and solution spaces. Furthermore, they treated the task as a socio-technical problem considering engineering and non-engineering factors. In addition, while exploring problem and solution entities, they used multiple representations to communicate ideas but had difficulties translating symbolic representations into more physical, concrete representations. Regardless the technical issues and time constraints, the students completed the conceptual redesign and communicated their proposal to the client.</p> <p><br></p> <p>The second study used qualitative content analysis to examine first-year engineering students’ ideation as a cognitive skill associated with the EHoM of problem finding and creative problem solving. Particularly, it focused on students’ ideation of questions and recommendations when doing data analytics to help improve a client’s enterprise. The analysis of students’ reports showed that they expanded the problem space of the task by bringing additional information that was not provided. They asked questions focused on performing statistical analysis of the dataset and requesting information about the company’s business model. At the end of their data analytics, students made high- and low-quality recommendations considering their alignment with a specific problem, robust evidence, and the client’s needs. </p> <p><br></p> <p>The third study used qualitative descriptive research to investigate undergraduate participants' cognitive competencies within engineering systems thinking at the International Genetically Engineered Machine (iGEM) competition. These competencies are associated with the EHoM of problem finding, creative problem solving, systems thinking, and visualization. Mainly, the study focused on analyzing the evidence of cognitive competencies documented in the publicly available participants’ wikis where they registered their design process. Results showed that iGEM teams developed solutions with biological systems interacting with other systems and used concepts and tools from multiple disciplines. They also cooperated with stakeholders, which helped them analyze their system from multiple lenses. Moreover, depending on their upfront task, they fluidly represented their systems from structural, behavioral, and functional perspectives. </p> <p><br></p> <p>The final chapter of this dissertation presents an overarching discussion across the studies. The findings and implications will support curriculum designers, instructors, and other interested readers to prepare learning environments that promote undergraduate students’ engineering thinking. Furthermore, they may guide future efforts to continue exploring the students' thinking process when addressing engineering problems. </p>

The facilitator model for dual credit offers a way for student to earn directly transcripted credit to colleges and universities, overcoming many barriers faced by other dual credit models. Successful implementation of this model requires high degree of involvement from the cooperating institution. This IRB approved qualitative case study explored the needs of five teacher facilitators in both summer professional development and on-going support throughout the school year when implementing a facilitator model for dual credit with open-ended design coursework. Code-recode and axial coding techniques were applied to over 90 hours of transcribed data, artifacts, and observations from a seven month period to find emerging themes and offer recommendations for implementation.