Engineering Commons^™

Supporting Mechanistic Reasoning In Domain-Specific Contexts, Paul J. Weinberg

Journal of Pre-College Engineering Education Research (J-PEER)

Mechanistic reasoning is an epistemic practice central within science, technology, engineering, and mathematics disciplines. Although there has been some work on mechanistic reasoning in the research literature and standards documents, much of this work targets domain-general characterizations of mechanistic reasoning; this study provides domain-specific illustrations of mechanistic reasoning. The data in this study comes from the Assessment of Mechanistic Reasoning Project (AMRP) (Weinberg, 2012), designed using item response theory modeling to diagnose individuals’ mechanistic reasoning about systems of levers. Such a characterization of mechanistic reasoning illuminates what is easy and difficult about this form of reasoning, within the subdomain of …

Gender And Participation In An Engineering Problem-Based Learning Environment, Laura Hirshfield, Milo D. Koretsky

Interdisciplinary Journal of Problem-Based Learning

The use of problem-based learning (PBL) is gaining attention in the engineering classroom as a way to help students synthesize foundational knowledge and to better prepare students for practice. In this work, we study the discourse interactions between 27 student teams and two instructors in an engineering PBL environment to analyze how participation is distributed among team members, paying particular attention to the differences between male and female students. There were no statistically significant differences between the amount that male and female students spoke; however, stereotypical gender roles and traditional gendered behavior did manifest in the discussion. Also, regardless of …

Safety Climate Of Ab-Initio Flying Training Organizations: The Case Of An Australian Tertiary (Collegiate) Aviation Program, Yi Gao, Natalia Rajendran

Journal of Aviation Technology and Engineering

A healthy safety culture is essential to the safe operation of any aviation organization, including flight schools. This study aimed to assess the safety climate of an Australian tertiary (collegiate) aviation program using a self-constructed instrument. Factor analysis of the instrument identified four safety themes, which are Safety Reporting Culture, Safety Reporting Procedure, Organizational Culture and Practice, and General Safety Knowledge. The responses of student pilots suggested that the overall safety climate of the subject flight training academy was healthy at the time of the survey. Further analyses found that perceptions of students of different year groups on Reporting Culture …

Profile Interview With Vincent Duffy, Apoorva Sulakhe

Purdue Journal of Service-Learning and International Engagement

Dr. Vincent Duffy is an associate professor in the Department of Industrial Engineering at Purdue University holding a joint appointment with Agricultural and Biological Engineering. Duffy focuses on human factors engineering and ergonomic design. His interest in teaching began early when he was a teaching assistant for IE 386 at Purdue University while pursuing his master’s degree. As an industrial engineering master’s non-thesis student, Duffy realized he had a natural inclination toward teaching. This motivation, along with the support and mentorship of Ferdinand Leimkuhler, the head of the department, turned him toward the fi eld of research. He rejoined Purdue …

Best Management Practices: A Community-Based Approach To Construction And Installation, Nathanael J. La Breche

Purdue Journal of Service-Learning and International Engagement

The Wabash River Enhancement Corporation (WREC) is a nonprofit organization dedicated to improving both the health of the Wabash River and the surrounding terrestrial areas. In an effort to improve water quality, their urban cost-share program focuses on supporting green projects within a critical region surrounding the Great Bend of the Wabash River. In this essay, a Purdue student describes his experience as leader of a six-member group who worked with WREC to locate a suitable site within this critical area and implement a green project. They selected the Lighthouse Baptist Church, located in Lafayette, Indiana, since it was experiencing …

Constructing Slow Sand Filters: Engineering Students’ Experiences In San José De Playón, Bolívar, Colombia, Sol Park, Sanyukta Gokhale, Kaylyn Colinco

Purdue Journal of Service-Learning and International Engagement

Sol Park, Sanyukta Gokhale, and Kaylyn Colinco were members of a Global Design Team (GDT) involved in providing innovative solutions to drinking water treatment in rural areas of developing countries. The immediate goal of the GDT in May 2016 was to deliver large slow sand filters (SSFs) to a rural school in Colombia. The experience placed the students in a small town 80 km (~50 miles) south of Cartagena, Colombia, called San José de Playón. The town pumps water from the Arroyo Reservoir, which is then consumed by the citizens and students at the local school (the only one in …

Answering Food Insecurity: Serving The Community With Food And Knowledge Using Technology, Courtney Simpson

Purdue Journal of Service-Learning and International Engagement

The courses of Tech120, CGT110, and ENGT 180/181 and Red Gold at Purdue collaborated to design a robot that would plant and water a garden for a local community charter school. The students centered the project on the users’ needs for fresh food, nutrition education, and early exposure to STEM for children. The school, Anderson Preparatory Academy (APA), is comprised of many children who come from low-income families and are in the free or reduced lunch program. Inspired from “Farm Bot,” a similar system that allows for almost hands-free gardening, the “Boiler Bot” is designed to be scalable so children …

Water Supply In Developing Countries: Student Experiences In The Dominican Republic, Albert Alwang, Margaret Busse, Audrey Caprio, Marieke Fenton, Jason Hawes, Andrew Kanach, Autumn Mcelfresh-Sutton

Purdue Journal of Service-Learning and International Engagement

In 2010, the United Nations established access to safe drinking water as a basic human right; however, many areas around the globe still lack access. The interdisciplinary service-learning course “Water Supply in Developing Countries” was established at Purdue in 2012 to address the complex issue of water insecurity around the world. Over the past five years, the course has produced teams involving students from nursing, engineering, agricultural economics, biology, and food science working together to develop sustainable, community-scale drinking water treatment systems. In partnership with Aqua Clara International, the student team in 2017 established a drinking water treatment system at …

Safety And Organization: An Epics Partnership With Habitat For Humanity, Trevor Drouillard, Logan Quaas, Colleen Kelch, Jeremiah Campbell, Anna Francis, Connor Moore, Jiayin Qi, Alyssa Trobl

Purdue Journal of Service-Learning and International Engagement

The student authors of this essay are a group of eight participating in the Engineering Projects in Community Service (EPICS) program on the Habitat for Humanity (HFH) team. In this article, they describe how they have improved the working conditions within the loft space of the local Habitat for Humanity office in Lafayette, Indiana. Their work is intended to permanently improve the safety conditions of the loft, as well as the organization of the equipment within the loft. The specific safety concerns addressed by the HFH team include horizontal steel trusses at head level and an unprotected access opening in …

Latinx And Caucasian Elementary School Children’S Knowledge Of And Interest In Engineering Activities, Gamze Ozogul, Cindy Faith Miller, Martin Reisslein

Journal of Pre-College Engineering Education Research (J-PEER)

Ethnic minorities, such as Latinx people of Hispanic or Latino origin, and women earn fewer engineering degrees than Caucasians and men. With shifting population dynamics and high demands for a technically qualified workforce, it is important to achieve broad participation in the engineering workforce by all ethnicities and both genders. Previous research has examined the knowledge of and interest in engineering among students in grades five and higher. In contrast, the present study examined elementary school students in grades K–5. The study found that older students in grades 4 and 5 had both greater knowledge of engineering occupational activities and …

Vfr-Into-Imc Accident Trends: Perceptions Of Deficiencies In Training, Wesley L. Major, Thomas Carney, Julius Keller, Allen Xie, Matt Price, John Duncan, Lori Brown, Geoffrey R. Whitehurst, William G. Rantz, Dominic Nicolai, Beth M. Beaudin-Seiler

Journal of Aviation Technology and Engineering

Pilots who operate under visual flight rules (VFR) and in visual meteorological conditions, who then continue flight into instrument meteorological conditions (IMC), remain as one of the leading causes of fatal aircraft accidents in general aviation. This paper examines past and current research initiatives, in seeking to identify causal factors and gaps in training that lead to VFR-into-IMC aircraft accidents, using a mixed methods approach. The Aircraft Owners and Pilots Association Air Safety Institute database and the National Transportation Safety Board database search engines were used to identify accident reports associated with VFR flight into IMC/deteriorating weather conditions for a …

Assessing The Benefits Of Performance-Based Navigation Procedures, Kabir O. Kasim

Journal of Aviation Technology and Engineering

Performance-based Navigation (PBN) allows aviation operations to be conducted based on actual operational requirements rather than the requirements of ground-based equipment. Although the general operational benefits of PBN procedures have been recognized by various studies, there is a need to specify the actual benefits in terms of the frequency of event anomalies that could be expected from the use of PBN procedures. The study reviewed some of the available literature and identified some operational improvements as reported by previous authors. The study then proceeded to review archival data from the Aviation Safety Reporting System (ASRS) database with a view to …

Design Of Dc-Link Vscf Ac Electrical Power System For The Embraer 190/195 Aircraft, Eduardo Francis Carvalho Freitas, Nihad E. Daidzic

Journal of Aviation Technology and Engineering

A proposed novel DC-Link VSCF AC-DC-AC electrical power system converter for Embraer 190/195 transport category airplane is presented. The proposed converter could replace the existing conventional system based on the CSCF IDGs. Several contemporary production airplanes already have VSCF as a major or backup source of electrical power. Problems existed with the older VSCF systems in the past; however, the switched power electronics and digital controllers have matured and can be now, in our opinion, safely integrated and replace existing constant-speed hydraulic transmissions powering CSCF AC generators. IGBT power transistors for medium-level power conversion and relatively fast efficient switching are …

Vfr-Into-Imc: An Analysis Of Two Training Protocols On Weather-Related Posttest Scores, Julius C. Keller, Thomas Carney, Allen Xie, Wesley Major, Matt Price

Journal of Aviation Technology and Engineering

According to the Aircraft Owners and Pilots Association Air Safety Institute, 264 accidents were identified as continued visual flight rules (VFR) into instrument meteorological conditions (IMC), during the past ten years. Approximately 89% of those VFR-into-IMC accidents were fatal, causing hundreds of deaths. VFR-into-IMC has been a major concern for the general aviation community, prompting focused efforts. Research, data analyses, outreach, training, and education are recommended practices to address risks associated with VFR-into-IMC. Researchers of the current study sought to evaluate the cause and effect relationship between two training protocols and weather-related posttest scores. A pretest–posttest experimental design was utilized …

Approaches To Integrating Engineering In Stem Units And Student Achievement Gains, Elizabeth A. Crotty, Selcen S. Guzey, Gillian H. Roehrig, Aran W. Glancy, Elizabeth A. Ring-Whalen, Tamara J. Moore

Journal of Pre-College Engineering Education Research (J-PEER)

This study examined different approaches to integrating engineering practices in science, technology, engineering, and mathematics (STEM) curriculum units. These various approaches were correlated with student outcomes on engineering assessment items. There are numerous reform documents in the USA and around the world that emphasize the need to incorporate engineering into science education. The authors of this study contend that different approaches to integrating engineering in STEM units correlate to larger student achievement gains in engineering, based on assessment items developed from the Framework for Quality K–12 Engineering Education (Moore, Glancy, Tank, Kersten, & Smith, 2014). The goal of this work …

How To Enhance Interdisciplinary Competence—Interdisciplinary Problem-Based Learning Versus Interdisciplinary Project-Based Learning, Mirjam Brassler, Jan Dettmers

Interdisciplinary Journal of Problem-Based Learning

Interdisciplinary competence is important in academia for both employability and sustainable development. However, to date, there are no specific interdisciplinary education models and, naturally, no empirical studies to assess them. Since problem-based learning (PBL) and project-based learning (PjBL) are learning approaches that emphasize students’ collaboration, both pedagogies seem suitable to enhance students’ interdisciplinary competence. Based on the principle of constructive alignment and four instructional principles on interdisciplinary learning, this paper proposes that students profit more from interdisciplinary PBL (iPBL) than interdisciplinary PjBL (iPjBL). A pre-post study was conducted with a sample of 95 students participating in iPBL and 183 students …

Mathematical Description And Mechanistic Reasoning: A Pathway Toward Stem Integration, Paul J. Weinberg

Journal of Pre-College Engineering Education Research (J-PEER)

Because reasoning about mechanism is critical to disciplined inquiry in science, technology, engineering, and mathematics (STEM) domains, this study focuses on ways to support the development of this form of reasoning. This study attends to how mechanistic reasoning is constituted through mathematical description. This study draws upon Smith’s (2007) characterization of mathematical description of scientific phenomena as ‘‘bootstrapping,’’ where negotiating the relationship between target phenomena and represented relations is fundamental to learning. In addition, the development of mathematical representation presents a viable pathway towards STEM integration. In this study, participants responded to an assessment of mechanistic reasoning while cognitive interviews …

Teachers’ Incorporation Of Argumentation To Support Engineering Learning In Stem Integration Curricula, Corey A. Mathis, Emilie A. Siverling, Aran W. Glancy, Tamara J. Moore

Journal of Pre-College Engineering Education Research (J-PEER)

One of the fundamental practices identified in Next Generation Science Standards (NGSS) is argumentation, which has been researched in P-12 science education for the previous two decades but has yet to be studied within the context of P-12 engineering education. This research explores how elementary and middle school science teachers incorporated argumentation into engineering design-based STEM (science, technology, engineering, and mathematics) integration curricular units they developed during a professional development program. To gain a better understanding of how teachers included argumentation in their curricula, a multiple case study approach was conducted using four STEM integration units. While evidence of argumentation …

Students’ Successes And Challenges Applying Data Analysis And Measurement Skills In A Fifth-Grade Integrated Stem Unit, Aran W. Glancy, Tamara J. Moore, Selcen Guzey, Karl A. Smith

Journal of Pre-College Engineering Education Research (J-PEER)

An understanding of statistics and skills in data analysis are becoming more and more essential, yet research consistently shows that students struggle with these concepts at all levels. This case study documents some of the struggles four groups of fifth-grade students encounter as they collect, organize, and interpret data and then ultimately attempt to draw conclusions or make decisions based on these data. The activities in which the students engaged were part of an integrated science, technology, engineering, and mathematics (STEM) unit that had students collecting and analyzing data both in the context of learning science concepts and in the …

Perspectives On Failure In The Classroom By Elementary Teachers New To Teaching Engineering, Pamela S. Lottero-Perdue, Elizabeth A. Parry

Journal of Pre-College Engineering Education Research (J-PEER)

This mixed methods study examines perspectives on failure in the classroom by elementary teachers new to teaching engineering. The study participants included 254 teachers in third, fourth, and fifth grade who responded to survey questions about failure, as well as a subset of 38 of those teachers who participated in interviews about failure. The study first examines the literature about failure in the contexts of engineering and education. Failure is positioned as largely normative and expected in engineering, whereas in education, learning and failure have a more tenuous relationship. Identity, failure avoidance, failure as part of the learning process, growth …

Undergraduate Engineers And Teachers: Can Students Be Both?, Malinda S. Zarske, Maia L. Vadeen, Janet Y. Tsai, Jacquelyn F. Sullivan, Denise W. Carlson

Journal of Pre-College Engineering Education Research (J-PEER)

Today’s college-aged students are graduating into a world that relies on multidisciplinary talents to succeed. Engineering college majors are more likely to find jobs after college that are outside of STEM (science, technology, engineering, and mathematics) fields, including jobs in healthcare, management, and social services. A survey of engineering undergraduate students at the University of Colorado Boulder in November 2012 indicated a desire by students to simultaneously pursue secondary teacher licensure alongside their engineering degrees: 25 percent ‘‘agreed’’ or ‘‘strongly agreed’’ that they ‘‘would be interested in earning grades 7–12 science or math teaching licenses while [they] earn [their] engineering …

Examining Experienced Teachers’ Noticing Of And Responses To Students’ Engineering, Aaron W. Johnson, Kristen B. Wendell, Jessica Watkins

Journal of Pre-College Engineering Education Research (J-PEER)

Engineering design places unique demands on teachers, as students are coming up with new, unanticipated ideas to problems along often unpredictable trajectories. These demands motivate a responsive approach to teaching, in which teachers attend their students’ thinking and flexibly adapt their instructional plans and objectives. A great deal of literature has focused on responsive teaching in science and mathematics, but there has been little research or professional development on this approach in engineering. In this work, we conducted clinical video-based interviews with six elementary teachers experienced in teaching engineering to discuss what they noticed in their students’ thinking and how …

Elementary Teachers’ Reflections On Design Failures And Use Of Fail Words After Teaching Engineering For Two Years, Pamela S. Lottero-Perdue, Elizabeth A. Parry

Journal of Pre-College Engineering Education Research (J-PEER)

This mixed-methods study examines how teachers who have taught one or two units of the Engineering is Elementary (EiE) curriculum for two years reported on: students’ responses to design failure; the ways in which they, the teachers, supported these students and used fail words (e.g. fail, failure); and the teachers’ broad perspectives and messages to students about failure. In addition, the study explores how strategies, perspectives, messages, and fail word use may change after two years of engineering instruction. This study builds on previous work about elementary teachers’: perspectives on failure prior to teaching engineering, and responses to and perspectives …

A Cross-Sectional Study Of Engineering Identity During Undergraduate Education, Allison Godwin, Walter C. Lee

School of Engineering Education Faculty Publications

This research paper explores students’ engineering, mathematics, and physics identities across the four years of undergraduate engineering education. The focus of this work are subject-related role identities, or how students position themselves and are positioned by others as the kind of people that engage in engineering, mathematics, or physics. An identity as an engineer is a role identity because it embodies a specific character that an individual plays within a social sphere. In this case, the social sphere is in the process of becoming an engineer. Other research has focused on identity development of engineering students, often either early in …

Board # 102 : Pecase: Implementing K-12 Engineering Standards Through Stem Integration - An Executive Summary Of The Products And Research, Tamara Moore, Kristina Tank, Aran Glancy, Elizabeth Gajdzik

School of Engineering Education Faculty Publications

This executive summary of the grant, PECASE: Implementing K-12 Engineering Standards through STEM Integration, comes at the conclusion of the project. The purpose of the grant was to develop a definition and explore the practice of engineering in K-12 STEM classrooms. The definition was then used to assess curricula, policy documents, teacher practice, and student learning. Through this work, the definition was then used to help with the framing and development of curricula for K-5 classrooms. The resulting curricula are called the PictureSTEM units. These instructional units for K-5 classrooms utilize engineering design and picture books to teach young students …

An Assessment Framework For First-Year Introduction To Engineering Courses, Senay Purzer, Kerrie A. Douglas, Jill A. Folkerts, Taylor V. Williams

School of Engineering Education Faculty Publications

In this evidence-based practice paper, we describe an assessment framework that applies to first-year introductory engineering courses. First-year engineering courses cover a variety of learning objectives that address both technical and professional outcomes outlined in ABET. These courses also often involve open-ended design and modeling projects. The assessment of multiple competencies along with open-ended design can be a challenging task for educators. In this paper, we describe a framework that guides instructional processes for effective assessment for student learning. This assessment-centered teaching and learning framework helps connect specific learning objectives to broader learning goals or competencies and on-going formative feedback …

Board # 114 : Progress Toward Optimizing Student Team Skill Development Using Evidence-Based Strategies, Matthew W. Ohland, Daniel M. Ferguson, Misty L. Loughry, David Jonathan Woehr

School of Engineering Education Faculty Publications

The broad goal of this work is to study the effectiveness of various teamwork training interventions. This research requires the use of a common model of teamwork and a system for training, collecting ratings data, and providing feedback. We will leverage the NSF’s prior investment in the CATME system, which meets the research criteria and automates some of the data collection and feedback, which will aid in executing the research protocol consistently. Seven empirical studies will determine the effect sizes of training, practice in teams, practice rating, and feedback interventions on cognitive development (improvement of team skills) and metacognitive development …

A Content Analysis Of How Engineering Is Assessed In Published Curricula, Kerrie A. Douglas, Tamara J. Moore, Hillary Merzdorf, Tingxuan Lee, Amanda C. Johnston

School of Engineering Education Faculty Publications

A Content Analysis of How Engineering is Assessed in Published Curricula (Fundamental)

The purpose of this proposal is to present research findings concerning how and what about engineering is commonly assessed in well-known engineering or integrated STEM published curriculum. Two of the major shifts brought about by Next Generation Science Standards (NGSS) are an increased emphasis in students’ capabilities to perform higher-level reasoning skills and integrate content understanding into science practices. At the same time, NGSS has made engineering integration into science education a priority, and it is an exciting time of reform as schools are exploring curriculum resources and …

A Learning Trajectory For Developing Computational Thinking And Programming, Sean B. Brophy, Tony A. Lowe

School of Engineering Education Faculty Publications

A learning trajectory for developing computational thinking and programming This research study identifies the relationship between students’ prior experiences with programming and their development of computational thinking and programming during their first year engineering experience. Many first year programs teach students basic programming constructs using languages like MATLAB or LABView. The reason for this is because the disciplinary schools expect students to transform the constitutive properties that model a system’s behavior into a computer model they can use to analyze a system’s performance. Some undergraduate engineering students are entering college with strong computational backgrounds, while others are not. Peer learning …

Approaches To Coaching Students In Design Reviews, Robin Adams, Tiago R. Forin, Cole H. Joslyn

School of Engineering Education Faculty Publications

Design reviews offer a unique window into understanding how design teachers help their students develop as designers. They are a prevalent practice for helping students develop design thinking expertise, although their structure and content may vary across disciplines. Understanding the teaching that occurs during design reviews can illuminate the ways teachers support students in becoming design thinkers. In this paper, we extend prior work to illustrate disciplinary perspectives of how design teachers help their students develop as design thinkers. The guiding framework is design pedagogical knowledge (PCK), the content-specific and practice-based specialized knowledge of teaching design. We analyzed five sets …