Lessons Learned: Implementing the Case Teaching Method in a Mechanical Engineering Course

Background Case studies have been found to increase students' critical thinking and problem‐solving skills, higher‐order thinking skills, conceptual change, and their motivation to learn. Despite the popularity of the case study approach within engineering, the empirical research on the effectiveness of case studies is limited and the research that does exist has primarily focused on student perceptions of their learning rather than actual learning outcomes. Purpose (Hypothesis ) This paper describes an investigation of the impact of case‐based instruction on undergraduate mechanical engineering students' conceptual understanding and their attitudes towards the use of case studies. Design /Method Seventy‐three students from two sections of the same mechanical engineering course participated in this study. The two sections were both taught using traditional lecture and case teaching methods. Participants completed pre‐tests, post‐tests, and a survey to assess their conceptual understanding and engagement. Results Results suggested that the majority of participants felt the use of case studies was engaging and added a lot of realism to the class. There were no significant differences between traditional lecture and case teaching method on students' conceptual understanding. However, the use of case studies did no harm to students' understanding while making the content more relevant to students. Conclusions Case‐based instruction can be beneficial for students in terms of actively engaging them and allowing them to see the application and/or relevance of engineering to the real world.     

Professional Practice: A Topic for Engineering Research and Instruction

Professional practice is considered as a much broader topic for inclusion in engineering curricula than traditionally associated with engineering design. Practicing engineers require a working knowledge of several non-engineering disciplines and must interact with people of a variety of backgrounds within a variety of organizational contexts. Engineers must develop the skills of problem solving and decision making for circumstances much broader than generally used in the engineering class room. Professional engineering practice in this broad context can be the subject of legitimate research and instruction. Case research methods are applicable to the exploratory study of engineering practice and the development of a knowledge base important to designing engineering curricula. Case instruction provides one method of dealing with topics at the boundaries of the engineering disciplines and in developing decision making skills that are fundamental to engineering practice. It is concluded that the engineering education community should explore new frameworks for research, instruction and the associated scholarship that address professional practice issues.     

Lessons From Using TQM in the Classroom

This paper describes efforts to apply Total Quality Management (TQM) concepts and the ideas of customer focus, data-based decision making, and continuous improvement to instruction in a 100-student, junior-level probability and statistics course. By adopting a customer focus and establishing a dialogue with the students in the course, it became clear that lectures, handouts, and homework assignments could be more effective. Things often went wrong because students and the instructor had different expectations about what was or should be happening. This experience suggests that establishing a dialogue with students, building a teacher-student partnership for learning, and addressing differences in expectations and objectives are crucial to the development of an effective learning environment in engineering classrooms.     

Senior/Sophomore Co-Class Instruction: Teaching Interpersonal Management Skills in Engineering

As society becomes increasingly technology-oriented, there is a growing demand for engineers and scientists to take a greater role in decision-making processes. The future success of our engineering graduates will increasingly depend on not only solid training in scientific and engineering principles, but also a more rigorous education in interpersonal management skills (IPMS). Co-class instruction of sophomore and senior engineering students provides an efficient educational structure to incorporate IPMS education into an existing engineering curriculum. Co-class instruction provides opportunities for senior students to experience direct subordinate supervisory technical management, develop project management skills, formally evaluate personnel performance and improve faculty/student contact. Younger students gain opportunities to see how their engineering education is applied and gives them an opportunity to network with graduating students. Co-class instruction did not significantly increase instructor workload, but does require that one instructor teach both sophomore and senior classes concurrently. Given the similarity in engineering curriculum structure, this method should be easily applicable to a wide range of engineering disciplines. Results indicate that students are highly receptive to co-class instruction, with excellent feedback.     

A K‐12/University Partnership: Creating Tomorrow's Engineers*

Supported by the National Science Foundation, the GK‐12 Fellows program at the University of Colorado at Boulder explores innovative ways for engineering graduate students to use engineering as the vehicle to provide K‐12 classroom instruction and hands‐on experiences that integrate physical sciences, mathematics, engineering and technology. Engineering “Fellows” fill a crucial gap in the two‐way exchange of content and pedagogy between the College of Engineering and Applied Science and the K‐12 community of learners. The active presence of real world, engineering role models in K‐12 classrooms improves the quality of math and science content, and introduces engineering to teachers and young students as a potential career path. Working through the University's graduate program legitimizes K‐12 outreach as a valid, and satisfying, academic endeavor for graduate students.     

An Intervention to Address Gender Issues in a Course on Design,Engineering, and Technology for Science Educators

A course on design, engineering, and technology based on Bandura's theory of self‐efficacy was taught to nine science education graduate students who were also practicing teachers. The interpretive analysis method was used to code and analyze qualitative data from focus groups, weekly reflections on classes and readings, and pre‐, post‐, and delayed‐post course questions. The improvement in tinkering and technical self‐efficacies for five males was limited because of initially higher self‐efficacies while that for four females was moderate to high, especially when working in same‐sex teams in a non‐competitive environment. All students also increased their understanding of the societal relevance of engineering and their ability to transfer engineering concepts to pre‐college classrooms. Implementing the principles employed in this intervention in pre‐college science and university engineering classrooms could help recruit students into engineering as well as help retain both male and female undergraduate engineering students.     

Looking Beyond Content: Skill Development for Engineers

Current concerns over reforming engineering education have focused attention on helping students develop skills and an adaptive expertise. Phenomenological guidelines for instruction along these lines can be understood as arising out of an emerging theory of thinking and learning built on results in the neural, cognitive, and behavioral sciences. We outline this framework and consider some of its implications, such as developing a more detailed understanding of the specific skill of using mathematics in modeling physical situations. This approach provides theoretical underpinnings for some best‐practice instructional methods designed to help students develop this skill and provides guidance for further research in the area.     

Beliefs and Expectations about Engineering Preparation Exhibited by High School STEM Teachers

Background If we are to effect change in teacher practices and decision making regarding instruction, college preparation, and career success in engineering, then knowledge of teachers' beliefs and expectations about engineering needs to be understood. Purpose (Hypothesis ) The primary purpose was to develop a statistically reliable survey instrument to document teachers' beliefs and expectations about pre‐college engineering instruction, college preparation, and career success in engineering, called the Engineering Education Beliefs and Expectations Instrument (EEBEI), and to compare teachers' views. Design /Method Using two samples of teachers, EEBEI was established as a statistically reliable survey and was used to examine the beliefs and expectations of Project Lead the Way (PLTW) and non‐PLTW teachers. The results were used to further examine teachers' decisions in advising fictional students (described in vignettes) with varying academic and socioeconomic profiles. Results High school STEM teachers report their instruction was influenced by students' interests, family background, and prior academic achievement. Comparisons between PLTW and non‐PLTW teachers revealed that non‐PLTW teachers agreed more strongly that an engineer must demonstrate high scholastic achievement in math and science whereas PLTW teachers were more likely to report that science and math content was integrated into engineering activities. Although teachers report that students' socioeconomic status was not influential when asked explicitly, it did influence situated decision‐making tasks using fictional student vignettes. Conclusions Findings address challenges of STEM integration and reveal conflicting purposes of K‐12 engineering education as being for a select few or to promote technological literacy for all students, which affects recruitment, instruction, and assessment practices.     

Liu Zeyuan's philosophy of engineering and technology: An introduction to his Marxist socioeconomic theory

Liu Zeyuan (1940–2020) was a contributing founder to the Northeastern School in Chinese philosophy of technology. As such, he undertook to develop a theory that built on Marxism as the official ideology of the People's Republic of China. Following an overview of Liu's life and work, this article introduces the Marxist socioeconomic theory that served as a framework for his research. It then describes how he used this theory to reflect on the essential features and historical evolution of engineering and technology along with his analyses of issues related to innovation, ethics, and governance. It includes some reflections on how Liu's thought can be related to other philosophies of engineering and technology both inside and outside China.     

Advancing Engineering Education in P‐12 Classrooms

Engineering as a profession faces the challenge of making the use of technology ubiquitous and transparent in society while at the same time raising young learners' interest and understanding of how technology works. Educational efforts in science, technology, engineering, and mathematics (i.e., STEM disciplines) continue to grow in pre‐kindergarten through 12th grade (P‐12) as part of addressing this challenge. This article explores how engineering education can support acquisition of a wide range of knowledge and skills associated with comprehending and using STEM knowledge to accomplish real world problem solving through design, troubleshooting, and analysis activities. We present several promising instructional models for teaching engineering in P‐12 classrooms as examples of how engineering can be integrated into the curriculum. While the introduction of engineering education into P‐12 classrooms presents a number of opportunities for STEM learning, it also raises issues regarding teacher knowledge and professional development, and institutional challenges such as curricular standards and high‐stakes assessments. These issues are considered briefly with respect to providing direction for future research and development on engineering in P‐12.     

Effectiveness of a Multimedia Televised Distance Education Program for Engineering Majors

The University of Missouri-Rolla, the state's, “technological university,” has proposed a televised distance education program that would originate on the UMR campus and be delivered to community colleges and four-year institutions within the state not now offering engineering. The program would include the use of computer-integrated multimedia classrooms at both the home site and remote sites and would permit two-way transmission of video, audio, and data. Student response units would also be used at both sites to permit immediate feedback from the students to the instructor. Due to the cost of this proposal, it was determined a pilot study would be necessary to determine the effectiveness of the suggested program. This paper presents the research findings of the pilot study. The research suggests a televised interactive multimedia distance education program for engineering majors would be feasible.     

Applied Aerodynamics Experience for Secondary Science Teachers and Students

The Department of Aerospace Engineering, Mechanics & Engineering Science at the University of Florida in conjunction with the School Board of Alachua County, Florida has embarked on a four-year project of university-secondary school collaboration designed to enhance mathematics and science instruction in secondary school classrooms. The goals are to provide teachers with a fundamental knowledge of flight sciences as well as stimulate interest among students, particularly women and minorities, toward careers in engineering, mathematics, and science. In the first year, all thirteen of the county's eighth grade physical science teachers and their 1200 students participated. The activities included a three-day college level seminar for the teachers, several weeks of classroom instruction for all the students, and an airport field trip for a subgroup of about 400 students that included an orientation flight in a Cessna 172 aircraft. The project brought together large numbers of middle school students, teachers, undergraduate and graduate engineering students, school administrators, and university engineering faculty. In Year 2, we are expanding our coverage and improving our minority outreach by offering the program to additional counties and the Florida Comprehensive State Center for Minorities. We are also introducing a program to recruit undergraduate minority engineering students for teaching careers by teaming these students with middle school teacher “mentors”, and having them work with teachers in the classroom.     

Characteristics of Freshman Engineering Students: Models for Determining Student Attrition in Engineering

Nationwide, less than half the freshman who start in engineering graduate in engineering, and at least half of this attrition occurs during the freshman year. Clearly, the freshman year is critical for both academic success and retention of engineering students. Such success depends not only on the knowledge and skills learned during this first year, but also on the attitudes individual students bring with them to college. Hence, if these attitudes can be measured before beginning college, we can develop more targeted programs for reducing attrition and improving academic success. Further, by measuring changes in student attitude over the course of the freshman year, we can develop better methods to evaluate engineering education programs. To learn more about these attitudes and how they impact upon retention, we undertook a three-year research effort. First we identified attitudes incoming students have about the field of engineering, their perceptions about the upcoming educational experience, and their confidence in their ability to succeed in engineering. These attitudes were then related to performance and retention in the freshman engineering program. To accomplish this, a closedform survey was developed, tested and administered to the 1993–94 and 1994–95 freshman engineering classes. This study demonstrated that student attitudes can provide an effective means for evaluating aspects of our freshman engineering program, particularly those relating to issues of attrition. Specifically, students who left the freshman engineering program in “good academic standing” had significantly different attitudes about engineering and themselves than those possessed by other comparison groups: students who stayed in engineering and students who left engineering in “poor academic standing.” We developed regression models to predict attrition and performance in our freshman engineering program using quantified measures of student attitudes. Implementation of the models has allowed freshman advisors to better inform students of opportunities that engineering offers, to devise better programs of study that take advantage of students' varied interests, and to set retention goals that are more realistic.     

Systematic Design of a First-Year Mechanical Engineering Course at Carnegie Mellon University

Carnegie Mellon University offers a first-year course titled Fundamentals of Mechanical Engineering to introduce undergraduate students to the discipline of mechanical engineering. The goals of the course are to excite students about the field of mechanical engineering early in their careers, introduce basic mechanical engineering concepts in an integrated way, provide a link to the basic physics and mathematics courses, and present design and problem-solving skills as central engineering activities. These goals are met through a combination of real-world engineering examples, classroom demonstrations, and hands-on experience in assignments and laboratories. Over the eleven semesters that this course has been taught, teams of first-year students have designed and assembled energy conversion mechanisms using miniature steam engines and Meccano sets to drive a mobile vehicle or to generate electricity for lighting a bulb. This paper describes the systematic process used to design this course and emphasizes this process of carefully integrating lectures with classroom demonstrations, laboratory experiments and hands-on projects to encourage students' active learning.     

Ethics Instruction in Engineering Education: A (Mini) Meta‐Analysis

What are the objectives of engineering ethics? How is it being taught and how might instruction be more effective? The American Society for Engineering Education (ASEE) annual conference proceedings (1996–1999) contain 42 papers that treat engineering ethics as a coherent educational objective. Some of these papers disclose small components that seem to be part of a larger ethics curriculum. Other papers discuss engineering courses that are clearly the department's major ethics commitment. While it would be inappropriate to assume that the 42 papers represent the only means by which engineering students receive ethics instruction, these papers do present a variety of more‐or‐less defensible approaches and certainly the major intentional approaches of engineering curricula. This paper will develop an analysis of the 42 articles, including a discussion of where ethics is being taught (from both a chronological, and disciplinary perspective), and the six pedagogical approaches used to transfer an understanding of ethics to the student. These approaches include professional codes, humanist readings, theoretical grounding, ethical heuristics, case studies, and service learning. These six approaches will also be analyzed in terms of their promise to develop the ethical competencies needed by engineers.     

Bringing the Site into the Classroom: A Construction Engineering Laboratory

Recognizing that civil engineering students, as part of their construction training, must have closer contact with the real-world construction arena, a construction engineering laboratory has recently been set up at the Civil Engineering Department, Technion—Israel Institute of Technology. The laboratory is gradually being integrated into the curriculum of the Civil Engineering Department's Construction Engineering and Management Program. This paper describes the laboratory and its operation, and illustrates the laboratory's effectiveness in fulfilling its assigned role.     

Learning Conceptual Knowledge in the Engineering Sciences: Overview and Future Research Directions

Learning conceptual knowledge in engineering science is a critical element in the development of competence and expertise in engineering. To date, however, research on conceptual learning in engineering science has been limited. Therefore, this article draws heavily on fundamental research by cognitive psychologists and applied research by science educators to provide a background on fundamental issues in the field and methods for assessing conceptual knowledge. Some of the most common conceptual difficulties from three domains: mechanics, thermal science and direct current electricity, are discussed to provide concrete examples of what students find difficult to learn. The article concludes with a discussion of possible sources of these difficulties, implications for instruction, and suggestions for future research.     

The Effects of a First‐Year Engineering Design Course on Student Intellectual Development as Measured by the Perry Scheme

In response to the demand for enhanced design, problem‐solving, and team skills in engineering graduates, Penn State has instituted a number ofteam‐based, project‐learning courses, including one taken by nearly every first‐year engineering student. To determine the impact of these experiences on our students we have begun a cross‐sectional and longitudinal study of their intellectual development based upon the Perry model. In this paper, we describe the research methodology and results for the initial group of first‐year students interviewed. The results of the study include the effects on intellectual development of the first‐year design course, gender, honors status, and the students' academic ability as indicated by SAT scores and grade point average. Design experience was positively related to enhanced intellectual development. Honors status, gender, and academic ability were not significantly related to Perry rating. We discuss the implications of these findings for instruction and curricular reform.     

Teaching Communication in Capstone Design: The Role of the Instructor in Situated Learning

Calls for engineers to communicate more effectively are ubiquitous, and engineering education literature includes numerous examples of assignments and courses that integrate writing and speaking with technical content. However, little of this literature examines in detail how engineering students develop communication skills and how those learning mechanisms influence classroom practice. To address this gap, this article synthesizes research on communication learning in college from the fields of composition and technical communication and illustrates its relevance to the engineering classroom with a case study of a capstone design course. The principles of situated learning and activity theory, in particular, provide strong evidence that the ways in which course instructors and students interact around communication tasks play a significant role in helping students develop transferable communication skills.