First Steps in Understanding Engineering Students' Growth of Conceptual and Procedural Knowledge in an Interactive Learning Context

The development of procedural knowledge in students, i.e., the ability to effectively solve domain problems, is the goal of many instructional initiatives in engineering education. The present study examined learning in a rich learning environment in which students read text, listened to narrations, interacted with simulations, and solved problems using instructional software for thermodynamics. Twenty‐three engineering and science majors who had not taken a thermodynamics course provided verbal protocol data as they used this software. The data were analyzed for cognitive processes. There were three major findings: (1) students expressed significantly more cognitive activity on computer screens requiring interaction compared to text‐based screens; (2) there were striking individual differences in the extent to which students employed the materials; and (3) verbalizations revealed that students applied predominantly lower‐level cognitive processes when engaging these materials, and they failed to connect the conceptual and procedural knowledge in ways that would lead to deeper understanding. The results provide a baseline for additional studies of more advanced students in order to gain insight into how students develop skill in engineering.     

The Effect of Social Presence on Affective and Cognitive Learning in an International Engineering Course Taught via Distance Learning

Background Distance learning course formats can alter modes of information exchange and interpersonal interaction relative to traditional course formats. Purpose (Hypothesis ) To determine the effect of a distance course format on the knowledge acquisition (cognitive learning) and satisfaction (affective learning) of students, we investigated student learning responses and social presence during a graduate‐level engineering course taught via traditional (i.e., professor present in the classroom) and synchronous distance‐learning formats. Design /Method Direct quantification of participation, academic performance assessment based on homework and exam scores, and survey‐based assessments of student perceptions of the course were collected. Based on these data, cognitive and affective learning responses to different technological and interaction‐based aspects of the course were determined for each course format. Results We show that while affective learning decreased for students in the distance format course relative to the traditional format, cognitive learning was comparable. Our results suggest that loss of satellite connection and audio losses had a stronger negative effect on student perceptions than video disturbances, and that participation was the most important factor influencing affective learning. Conclusions While our findings do not suggest that cognitive learning is strongly affected by social presence, implementing strategies to enhance social presence may improve the overall learning experience and make distance learning more enjoyable for students.     

Developing On‐Line Homework for Introductory Thermodynamics

Homework in engineering courses is used to develop problem‐solving skills and to provide students with the practice they need in order to achieve mastery of essential concepts and procedures in their disciplines. We describe homework exercises that were developed for introductory thermodynamics and delivered to students via the Internet. Records of student use were created automatically by the computer server. The data revealed students' patterns of software usage in the context of the course; additional data from course instructors revealed the extent to which completing the on‐line homework improved students' in‐class test performance.     

A Cognitive Study of Problem Solving in Statics

Background Even as expectations for engineers continue to evolve to meet global challenges, analytical problem solving remains a central skill. Thus, improving students' analytical problem solving skills remains an important goal in engineering education. This study involves observation of students as they execute the initial steps of an engineering problem solving process in statics. Purpose (Hypothesis ) (1) What knowledge elements do statics students have the greatest difficulty applying during problem solving? (2) Are there differences in the knowledge elements that are accurately applied by strong and weak statics students? (3) Are there differences in the cognitive and metacognitive strategies used by strong and weak statics students during analysis? Design /Method These questions were addressed using think‐aloud sessions during which students solved typical textbook problems. We selected the work of twelve students for detailed analysis, six weak and six strong problem solvers, using an extreme groups split based on scores on the think‐aloud problems and a course exam score. The think‐aloud data from the two sets of students were analyzed to identify common technical errors and also major differences in the problem solving processes. Conclusions We found that the weak, and most of the strong problem solvers relied heavily on memory to decide what reactions were present at a given connection, and few of the students could reason physically about what reactions should be present. Furthermore, the cognitive analysis of the students' problems solving processes revealed substantial differences in the use of self‐explanation by weak and strong 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.     

The Theme Course: Connecting the Plant Trip to the Text Book

A plant trip provides subjects for team projects and lecture examples in a sophomore chemical engineering course, thus becoming a unifying “theme” for the course. The “theme” structure is intended to improve student mastery of course material by helping students relate different course topics to one another via real equipment and processes. Here, performance in a subsequent junior chemical engineering course by students from the “theme course” is compared with performance by students who took the sophomore course in a traditional lecture‐homework‐exam format. Theme course graduates claim better retention of concepts from the sophomore course, though their scores on exam questions testing their knowledge, comprehension, and application of these concepts did not differ significantly from that of students from the traditional course. Theme course graduates did earn higher grades in the junior course, due to better performance on exam questions requiring higher level skills such as analysis, synthesis, and evaluation. Students were enthusiastic about the course structure, and expressed excitement about learning from “real life.” Thus the “theme” structure results in early student success in the skills necessary for engineering design, and generates student enthusiasm for engineering.     

Giving Students Time for the Academic Resources that Work

Engineering courses offer students multiple resources for learning; however, it is not clear how much time students devote to these resources or how effective they are for mastering the course material. We examined students' use of learning resources in introductory thermodynamics through the use of activity logs, and the relation of these self‐reports to objective measures of course performance. Self‐report data revealed that students generally favored some resources over others, that these resources were mutually supportive of instruction, and that measures of resource use were significantly correlated with each other and with academic performance. We suggest that knowledge of how students allocate time to course resources, and correlations between the use of these resources and course performance, could assist instructors in course and curriculum planning.     

Making Engineering Education Fun

Maintaining student interest is more than an academic exercise. Institutions or departments that fail to challenge and actively involve their students in the learning process risk losing them to competing programs where the curricula are more dynamic and relevant. Within the Department of Nuclear Engineering at Oregon State University, we continually seek innovative ways to promote student retention while maintaining academic excellence. One recent effort was to restructure a first‐year nuclear engineering/health physics course. Using nuclear techniques, students were required to solve a fictitious murder. In the process they learned about teamwork, nuclear forensics methods, radiation protection, and basic radiation interactions. The class members were brought into the mystery playing the part of “graduate students” who helped their police‐detective uncle solve the case. To assist in their investigation the students subpoenaed expert “witnesses” to educate them on nuclear principles. The students, through homework, explained their actions, methods, and reasoning to a nontechnical participant (their “uncle“). By building on knowledge gained through interviews and homework, the students were able to solve the mystery. This mode of teaching requires extensive hands‐on faculty participation. However, the potential long‐term benefit is increased comprehension of course content as well as greater student interest and retention.     

Relationship Between Time of Class and Student Grades in an Active Learning Course

Background

A factor related to students’ course performance that has seen limited research compared to other academic factors is the time of day a class is offered. Because of students’ chronotypes (i.e., preferred time of day to study or work), time of class can influence attendance, which has a strong correlation with students’ performance in a course.

Purpose/Hypothesis

The goal of this study was to investigate the relationship between class time, students’ attendance including individual and average class attendance, and students’ final grades in an active learning course.

Design/Method

The grade and attendance records of 1,577 first‐year engineering (FYE) students enrolled in 15 sections at different times of the day were analyzed using Tukey's Honestly Significant Difference and Multi‐Level Modeling to identify whether the performance and attendance of students in the early morning sections were significantly different from those in the other sections and to differentiate the individual and class attendance in relation to students’ grades.

Results

Students enrolled in early morning and late Friday afternoon classes had lower attendance and final grades than students in other sections. Class average attendance had a significant relationship with students’ grades. Thus, in active learning classes, both an individual student's and classmates’ absences have a negative relationship with an individual student's grade.

Conclusion

FYE students are more likely to miss early morning classes. In a course based on active learning, this lower attendance has a negative relationship with student performance for all students in the class, including the ones who attend the class regularly, suggesting active learning may amplify the negative effects of missing classes.     

The Effects of an Orientation Course on the Attitudes of Freshmen Engineering Students

Increasing the retention rate of beginning students in engineering is an important goal for engineering education. Our study examined the attitudes of freshmen in regard to the academic counseling they received. Orientation classes have been offered in groups of 40 to students on a voluntary basis, and surveys have been done to examine the effectiveness of these courses in increasing students' commitment to and positive perception of the University. A comparison of students enrolled in the orientation course and students in a control group found significant differences in the positive perception of academic counseling. Those students in the orientation course were more satisfied with the counseling they received than those without this course.     

Web‐Based Readiness Assessment Quizzes

Student readiness to fully participate in designed educational activities is often impeded by a lack of individual preparation through assigned readings or study. However, student preparation is rarely treated as an integral part of course design. Consequently, web‐based readiness assessment quizzes were developed for three courses in biological/biosystems engineering, at the freshman and junior levels. The overall goal was to improve student preparatory reading by assessing lower‐level knowledge just prior to the class period when that knowledge is needed for higher‐level learning activities. In this way, a web‐based educational tool was utilized as an integral, rather than just supplemental, part of the course design. The quizzes were designed to simultaneously ensure/assess student preparation and guide the students toward the highest priority topics within a given unit. The quizzes were graded automatically with the results reported electronically to the instructor. Student likelihood to read assigned materials was significantly improved (P < 0.0001), based on ratings from students in three different courses over four years of using these quizzes.     

Dynamics of Peer Education in Cooperative Learning Workgroups

Many recent studies demonstrate that cooperative learning provides a variety of educational advantages over more traditional instructional models, both in general and specifically in engineering education. Little is known, however, about the interactional dynamics among students in engineering work groups. To explore these dynamics and their implications for engineering education, we analyzed work sessions of student groups in a sophomore‐level chemical engineering course at North Carolina State University. Using conversation analysis as a methodology for understanding how students taught and learned from one another, we found that group members generally engaged in two types of teaching‐learning interactions. In the first type, transfer‐of‐knowledge (TK) sequences, they took on distinct teacher and pupil roles, and in the second, collaborative sequences (CS), they worked together with no clear role differentiation. The interactional problems that occurred during the work sessions were associated primarily with TK sequences, and had to do with students who either habitually assumed the pupil's role (constant pupils) or habitually discouraged others' contributions (blockers). Our findings suggest that professors can facilitate student group interactions by introducing students to the two modes of teaching interaction so group members can effectively manage exchanges of knowledge, and also by helping students distribute tasks in a way that minimizes role imbalances.     

On the Use of Students for Developing Engineering Laboratories

This paper describes a unique and innovative approach that solved the dual problem of starting up a new engineering instructional laboratory in a timely manner, and for teaching engineering students advanced skills in Automatic Data Collection. Students enrolled in a special pilot course were used to develop and startup an Automatic Data Collection laboratory. These students were assigned individual Automatic Data Collection technologies of interest and given total responsibility for the successful startup of the laboratory. The organization and structure of the course modeled the typical team oriented project development efforts in industry. Feedback from students showed the course to be better than a typical lecture/laboratory/demonstration type course in the following ways: 1) students believed they had greater amount of contact with equipment; 2) their experience on the project was more realistic than more traditional courses; 3) they believed they gained a more thorough understanding of the technology under study; and 4) they believed they improved their professional skills making them more marketable to potential employers. With respect to the laboratory itself, startup time was reduced from an estimated 18 months to 14 weeks with the help of the student teams.     

Student Perceptions of Engineering Entrepreneurship: An Exploratory Study

This study examines students' overall perceptions of the engineering profession in a first‐year course in engineering, and the effect of a pedagogical approach aimed at exposing students to engineering entrepreneurship and their perceptions of engineering entrepreneurship. The approach featured a market game that engaged a pilot group of 20 students in forming IT companies and competing for the best design of a travel agent system. The rest of the students in the course completed the traditional class project, which involved designing and building a land sailer. A pre‐post Likert‐type survey designed to measure students' perceptions of the engineering profession was administered to all students enrolled in this course. In addition, a short answer questionnaire seeking students' pedagogical perceptions of the market game and the land sailer project was administered at the end of the course. Results indicated that students' overall perceptions of the engineering profession significantly improved by the end of the course. More importantly, the results indicated that students who participated in the market game had significantly better perceptions of engineering entrepreneurship, specifically professional skills, than students who participated in the land sailer project. These findings are of considerable interest to engineering schools that want to increase student retention and are looking for novel approaches to assist freshmen in choosing their majors.     

Developing a Systems Approach to Engineering Problem Solving and Design of Experiments in a Racecar‐Based Laboratory Course

A capstone mechanical engineering laboratory course is being implemented at the University of South Carolina that develops the student's abilities to analyze complex mechanical and thermal systems, to design experiments, and to develop their professional skills. The course is based upon an integrated sequence of laboratory experiments on a Legends‐class racecar. This vehicle is chosen as the system of study because it provides opportunities for the students to apply the spectrum of their mechanical engineering knowledge. It's also exciting to the students. As the students progress through the series of experiments, they are increasingly involved in experimental design (selecting sensors, sensor locations and experimental operating conditions). The course culminates in a truly open‐ended design of an experiment of their choosing. This course development project is supported by the National Science Foundation's Instrumentation and Laboratory Improvement Program, the NSF's Course, Curriculum and Laboratory Improvement Program, and the University of South Carolina. This paper describes the work in progress.     

Gender and Ethnicity Differences in Freshmen Engineering Student Attitudes: A Cross‐Institutional Study*

We examine the attitudes of entering freshman engineering students and how they change over the course of the first year at 17 institutions. In addition to better understanding these attitudes and the changes that occur, we explore how these changes potentially affect such issues as “first term probation” and attrition from engineering programs. Particular attention is directed at isolating differences due to gender and ethnicity. Thirteen different student attitudes were captured using the Pittsburgh Freshman Engineering Attitude Survey© (PFEAS) at the beginning of the first semester (pre) and at either the end of the first semester or first academic year (post). Definite gender differences were found on the pre‐survey for five of the attitude measures. For all but one of these measures, female engineering students' initial attitudes were more negative than those of male students. Across the sample of institutions, female students consistently began their engineering studies with a lower confidence in background knowledge about engineering, their abilities to succeed in engineering, and their perceptions of how engineers contribute to society than did their male counterparts. However, those same female students were more comfortable with their study habits than were the male students. The post questionnaire data indicated that differences for three of these five attitude measures persisted. Most important, female engineering students continued to maintain a lower confidence in their abilities to succeed in engineering as compared to male engineering students. When the PFEAS data were mapped into EC 2000 outcomes, comparable cross‐institutional gender differences were observed that paralleled those found for the attitudinal measures. Because the number of minority students was relatively small, significant cross‐institutional differences between each minority cohort studied (African American, Asian Pacific, and Hispanic) and the majority cohort, similar cross‐institutional patterns could not be observed. However, possible trends were found between African American and majority students' attitudes for certain measures, while other attitudinal measures were found to be significant when Hispanic students were compared to majority students. Significant attitudinal differences between Asian Pacific and majority students were similar to those found between female and male engineering students. By knowing how attitudinal measures differ among gender and ethnic cohorts, and understanding how those differences relate to attrition from engineering programs, we can then developed more informed programmatic initiatives that can impact these attitude in a positive manner. As a result, we may be able to reduce engineering attrition, especially by underrepresented student cohorts.     

Ethics and the Development of Professional Identities of Engineering Students

How do undergraduate students in engineering conceive of themselves as professionals? How can a course on engineering ethics affect the development of an undergraduate student's professional identity? In this project, students responded to questions about the characteristics and responsibilities of professional engineers. The results indicate that students learn about professionalism primarily from relatives and co‐workers who are engineers, and rarely from technical engineering courses. Even before they study engineering ethics, students put honesty and integrity on par with technical competence as an essential characteristic of engineers. In the course, students benefit from cases of actual incidents and from classroom activities that encourage diverse perspectives on moral problems. By analyzing cases in groups and by hearing different perspectives, students build self‐confidence in moral reasoning. By the end of the course, some students understand professional responsibility not only as liability for blame but in a capacious sense as stewardship for society.     

“What's to keep you from dropping out?” Student Immigration into and within Engineering

Nearly one‐half of the industrial engineering undergraduate interviewees in an investigation of their degree program indicated they previously had been enrolled in another major. Understanding why these students chose to remain in or enter a science, technology, engineering and math (STEM) major when their previous choice lost its appeal is an important piece of the STEM participation puzzle. Our data indicate effective formal and informal recruiting, contact with dynamic individuals who conveyed commitment to and excitement about the department and program, and a department that welcomed immigrants and promoted a clear, relevant image of its discipline's identity, influenced student decisions to relocate within STEM rather than attrite. The high proportion of females within the immigrant students is one factor contributing to the department's attainment of sex parity. Our students' stories offer lessons to other departments for attracting and retaining students who enter the higher education STEM pipeline.     

Understanding the Role of Self‐Efficacy in Engineering Education

The engineering professor's role is dualistic in the sense that not only must s/he create an academic environment conducive to the acquisition of course content but must also prepare students to become practicing professionals. This dualism requires that the professor both motivate good study habits as well as build within students the confidence that they have the requisite capability to perform actual engineering. Self‐efficacy, simply defined as one's self‐judgment concerning capability, has been shown to be an important mediating factor in cognitive motivation. This paper describes the motivating role of the professor, theories of motivation, the role of self‐efficacy in motivation, and guiding principles that can be used to enhance self‐efficacy in engineering students. These principles can serve as guidelines in designing instructional delivery strategies that motivate engineering students to engage in behaviors conducive to becoming value‐added practitioners.