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1. Can Instructional Prompts Support Effective Learner Behaviors with Tangible and Digital 3D Models?

   Orr, Matthew P. ; Butcher, Kirsten R. ( January 2020 , International Conference of the Learning Sciences (ICLS) 2020)

   This study investigated the impact of instructional prompts on how learners interacted with two forms of 3D models during a science education task: tangible (3D prints) or digital (desktop-based) 3D models of fossils from a natural history museum collection. Learners used 3D models to engage in observation and reasoning to determine the type of bone that was modeled and whether the dinosaur that the bone came from was a carnivore or herbivore. Two forms of instructional prompts were compared: functional prompts that encouraged learners to manipulate the models in ways that allowed them to determine how the fossil may have functioned in real life, and general prompts that simply encouraged learners to use models to help them complete the task. Results suggest that functional prompts encourage different participant interactions with tangible 3D models, but not with digital 3D models. 

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2. Faculty perceptions of and approaches towards engineering student motivation at Hispanic Serving Institutions

   Salgado, H ; Kendall, M ; Urquidi, Y ; Coso Strong, A ( July 2021 , American Society for Engineering Education Annual Conference)

   This research paper examines faculty perceptions of and approaches towards fostering students’ motivation to learn engineering at Hispanic-Serving Institutions (HSIs). By aligning learning experiences with what motivates Hispanic or Latinx students, the resulting higher student motivation could increase the sense of belonging for underrepresented populations in engineering, ultimately improving student retention and persistence through meaningful instructional practices. Motivation to learn encompasses individuals' perspectives about themselves, the course material, the broader educational curriculum, and their role in their own learning [1]. Students’ motivation can be supported or hindered by their interactions with others, peers, and educators. As such, an educator’s teaching style is a critical part of this process [2]. Therefore, because of the link between a faculty member’s ability to foster student motivation and improved learning outcomes, this paper seeks to explore how engineering faculty approach student motivation in their course designs at Hispanic-Serving Institutions. Humans are curious beings naturally drawn to exploration and learning. Self Determination Theory (SDT), popularized by Ryan and Deci, describes the interconnection of extrinsic (external) and intrinsic (internal) motivators, acknowledging the link between student’s physiological needs and their learning motivations [1], [3]. SDT proposes that students must experience the satisfaction of competence, autonomy, and relatedness for a high level of intrinsic motivation. Further, research indicates that appropriately structured, highly autonomy-supportive teaching styles that foster intrinsic motivation are associated with improved student outcomes [2]. However, further research is needed to observe how faculty prioritize students’ innate needs and how they seek to foster student motivation in tangible ways within their engineering classrooms. Therefore, this paper seeks to answer the following research question: What educational supports do engineering faculty at HSIs propose to embed in their curricula to increase their students’ intrinsic motivation? To answer this question, thirty-six engineering educators from thirteen two- and four-year HSIs from across the continental United States were introduced to the SDT and approaches for supporting students’ intrinsic motivation during a multi-institutional faculty development workshop series. Participants were asked to reflect on and prototype learning experiences that would promote intrinsic motivation and fulfill students’ needs for competence, relatedness, and autonomy to learn engineering [1]. Data were collected through a series of reflection worksheets where participants were asked to describe their target stakeholders, define a course redesign goal, and generate possible solutions while considering the impact of the redesign on student motivation. Qualitative analysis was used to explore participant responses. Analysis indicates that the participants were more likely to simultaneously address multiple motivational constructs when attempting to improve student motivation, rather than addressing them individually. Some of these approaches included the adoption of autonomy-supportive and structured teaching styles. As a result of this research, there is potential to influence future faculty development opportunities at HSIs and further explore intentional learning experiences that promote and foster intrinsic motivation in the engineering classroom. 

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3. Integrating Professional Mentorship with a 3D-Printing Curriculum to Help Rural Youth Forge STEM Career Connections.

   Bhaduri, S. ( July 2021 , 2021 ASEE Virtual Annual Conference.)

   Economically disadvantaged youth residing in mountain tourist communities represent an important and understudied rural population. These communities typically include a large percentage of children that are English language learners. Our NSF STEM Career Connections project, A Model for Preparing Economically-Disadvantaged Rural Youth for the Future STEM Workplace, investigates strategies that help middle school youth in these communities to envision a broader range of workforce opportunities, especially in STEM and computing careers. This poster highlights the initial findings of an innovative model that involves working with local schools and community partners to support the integration of local career contexts, engineering phenomena, 3D printing technologies, career connections, and mentorship into formal educational experiences to motivate and prepare rural youth for future STEM careers. We focus on select classrooms at two middle schools and describe the implementation of a novel 3D printing curriculum during the 2020-2021 school-year. Two STEM teachers implemented the five-week curriculum with approximately 300 students per quarter. To create a rich inquiry-driven learning environment, the curriculum uses an instructional design approach called storylining. This approach is intended to promote coherence, relevance, and meaning from the students’ perspectives by using students’ questions to drive investigations and lessons. Students worked towards answering the question: “How can we support animals with physical disabilities so they can perform daily activities independently?” Students engaged in the engineering design process by defining, developing, and optimizing solutions to develop and print prosthetic limbs for animals with disabilities using 3D modeling, a unique augmented reality application, and 3D printing. In order to embed connections to STEM careers and career pathways, some students received mentorship and guidance from local STEM professionals who work in related fields. This poster will describe the curriculum and its implementation across two quarters at two middle schools in the US rural mountain west, as well as the impact on students’ interest in STEM and computing careers. During the first quarter students engaged in the 3D printing curriculum, but did not have access to the STEM career and career pathway connections mentorship piece. During the second quarter, the project established a partnership with a local STEM business -- a medical research institute that utilizes 3D printing and scanning for creating human surgical devices and procedures -- to provide mentorship to the students. Volunteers from this institute served as ongoing mentors for the students in each classroom during the second quarter. The STEM mentors guided students through the process of designing, testing, and optimizing their 3D models and 3D printed prosthetics, providing insights into how students’ learning directly applies to the medical industry. Different forms of student data such as cognitive interviews and pre/post STEM interest and spatial thinking surveys were collected and analyzed to understand the benefits of the career connections mentorship component. Preliminary findings suggest the relationship between local STEM businesses and students is important to motivate youth from rural areas to see themselves being successful in STEM careers and helping them to realize the benefits of engaging with emerging engineering technologies. 

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4. Impact of Argumentation Scaffolds in Contrasting Designs Tasks on Elementary Pre-Service Teachers’ Use of Science Ideas in Engineering Design

   Uruena, Yuri B. ; Rebello, Carina M ; Dasgupta, Chandan ; Magana, A J ; Rebello, N. Sanjay ( October 2017 , Physics Education Research Conference proceedings)

   Recently there have been calls to integrate engineering design experiences to support students’ scientific understanding. There is a need for instructional strategies in which learners are encouraged to identify and reflect on ways scientific principles can be applied to inform their designs and evaluate alternative designs. Studies show that the inclusion of contrasting cases can improve students’ conceptual understanding and reasoning. Yet, such tasks depend on how they are scaffolded. In this study, pre-service elementary teachers in a conceptual physics course analyzed contrasting solutions to a design problem. Two forms of scaffolds were embedded to facilitate case evaluation: 1) identify similarities and differences and 2) evaluate and produce an argument for a “good” design solution. We investigated the scientific ideas that the participants used as they contrasted multiple design solutions and the impact of the two approaches in students’ understanding of heat transfer. We found no significant differences in students’ conceptual understanding, but the argumentation condition had a significantly larger number of scientific ideas ‘cited’, ‘explained’ or ‘applied’ in their solutions,. The results suggest that contrasting designs with argumentation may be a promising intervention to facilitate students to use science concepts in engineering design. Future work is needed in order to investigate better scaffolds that can help students’ increase in conceptual learning. 

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5. Impact of Argumentation Scaffolds in Contrasting Designs Tasks on Elementary Pre-Service Teachers’ Use of Science Ideas in Engineering Design

   Uruena, Yuri B. ; Rebello, Carina M ; Dasgupta, Chandan ; Magana, Alejandra ; Rebello, N. Sanjay ( October 2017 , Physics Education Research Conference proceedings)

   Recently there have been calls to integrate engineering design experiences to support students’ scientific understanding. There is a need for instructional strategies in which learners are encouraged to identify and reflect on ways scientific principles can be applied to inform their designs and evaluate alternative designs. Studies show that the inclusion of contrasting cases can improve students’ conceptual understanding and reasoning. Yet, such tasks depend on how they are scaffolded. In this study, pre-service elementary teachers in a conceptual physics course analyzed contrasting solutions to a design problem. Two forms of scaffolds were embedded to facilitate case evaluation: 1) identify similarities and differences and 2) evaluate and produce an argument for a “good” design solution. We investigated the scientific ideas that the participants used as they contrasted multiple design solutions and the impact of the two approaches in students’ understanding of heat transfer. We found no significant differences in students’ conceptual understanding, but the argumentation condition had a significantly larger number of scientific ideas ‘cited’, ‘explained’ or ‘applied’ in their solutions,. The results suggest that contrasting designs with argumentation may be a promising intervention to facilitate students to use science concepts in engineering design. Future work is needed in order to investigate better scaffolds that can help students’ increase in conceptual learning. 

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