IMPROVING THE SPATIAL VISUALIZATION SKILLS OF FIRST YEAR ENGINEERING STUDENTS

Author(s):  
Robert V. Fleisig ◽  
Anna Robertson ◽  
Allan D. Spence

Spatial visualization skills are the aptitudes needed to mentally process three-dimensional images of objects. These skills are important to successful design engineers of all disciplines and are closely correlated to student performance in undergraduate engineering programmes. This paper reports on the metrics, curriculum, and teaching methods that have been implemented at McMaster University to improve the visualization skills of first year engineering students and modernize the course content of the mandatory first year engineering design and graphics course. Strong improvements in visualization test scores has been observed from the first week through to the last week of the course. To automate grading, the visualization tests have been implemented on WebCT. The WebCT-based visualization tests and results will be shared with other CDEN members upon request.

Author(s):  
Janice E Miller-Young

The premise of student-centered teaching is to respond to the ways in which students engage with the context and content of their learning, and therefore the purpose of this study was to find out how students visualize three-dimensional statics problems from two-dimensional diagrams early in a first-year engineering course. Think-alouds were conducted where students were asked to describe magnitudes and directions of various forces acting in three-dimensional spaces. Three key themes emerged: students have more trouble visualizing points behind, or vectors pointing into, the plane of the page; students may not use contextual clues to aid in their visualization; and students rely on equations to answer problems even when not necessary or even possible to do so. These findings are important to instructors in disciplines where spatial visualization is important because as they are already “experts” in this skill, they may underestimate the difficulty students initially face in approaching these problems. The value of using think-alouds to reveal student thinking as they struggle with concepts is also discussed. La prémisse de l’enseignement centré sur l’apprenant est de réagir à la manière dont les étudiants s’intéressent réellement au contexte et au contenu de leur apprentissage. En conséquence, le but de cette étude était de découvrir comment les étudiants visualisent les problèmes statiques tridimensionnels à partir de diagrammes bi-dimensionnels, dans un cours de génie de première année. Des exercices de réflexion à haute voix ont été effectués, au cours desquels on a demandé aux étudiants de décrire les magnitudes et les directions de diverses forces qui agissaient dans des espaces tridimensionnels. Trois thèmes clés sont apparus : les étudiants ont davantage de difficulté à visualiser les points qui se trouvent derrière le niveau de la page ou les vecteurs tournés dans la direction de la page; les étudiants n’utilisent pas toujours les indices contextuels dans leur visualisation; et enfin, les étudiants s’appuient sur les équations pour répondre aux problèmes, même quand ce n’est pas nécessaire ou quand c’est impossible à faire. Ces conclusions présentent un grand intérêt pour les enseignants de disciplines où la visualisation spatiale est importante car, puisqu’eux-mêmes sont déjà « experts » dans cette compétence, ils risquent de mésestimer la difficulté à laquelle les étudiants sont confrontés, au début, quand ils essaient de résoudre ces problèmes. L’article discute également de la valeur de l’utilisation d’exercices de réflexion à haute voix pour révéler ce que pensent les étudiants quand ils sont aux prises avec un problème.


Author(s):  
Sanchit Ingale ◽  
Anirudh Srinivasan ◽  
Diana Bairaktarova

Spatial visualization is the ability of an individual to imagine an object mentally and understand its spatial orientation. There have been multiple works proving that spatial visualization skills can be improved with an appropriate training. Such training warrant a critical place in the undergraduate engineering curricula in many engineering schools as spatial skills are considered vital for students’ success in the technical and design fields [1–4]. Enhanced spatial skills help not only professionals in the engineering field but also everyone in the 21st century environment. Drawing sectional views requires mental manipulation and visual thinking. To enhance students spatial reasoning, one of the authors of this study, conducted a class in spatial visualization. The course-learning goal aimed at improving first-year engineering students’ spatial reasoning through instruction on freehand drawings of sectional view. During the semester, two teaching assistants had to grade more than 500 assignments that consisted of sectional views of mechanical objects. This was a tedious and a time consuming task. Motivated by this experience, this paper proposes a software aiming at automating grading of students’ sectional view drawings. The proposed software will also give live feedback to students while they are working on the drawings. This interactive tool aims to 1) improve the learning experience of first year students, with limited CAD knowledge, and 2) introduce a pedagogical tool that can enhance spatial visualization training.


Author(s):  
Eniko T. Enikov ◽  
Zoltán Szabó ◽  
Rein Anton ◽  
Jesse Skoch ◽  
Whitney Sheen

The objective of this National Science Foundation (NSF)-funded undergraduate engineering training project is to introduce nanoscale science and engineering through an innovative use of a technical elective sophomore-level mechatronics course, followed by an Accreditation Board for Engineering and Technology (ABET)-mandated senior-level engineering capstone design project. A unique partnership between University of Arizona’s department of surgery, its neurosurgical division, and the College of Engineering presents a creative environment, where medical residents serve as mentors for undergraduate engineering students in developing product ideas enabled by nanotechnology. Examples include: a smart ventricular peritoneal (VP) shunt with flow-sensing; a bio-resorbable inflatable stent for drug delivery, and a hand-held non-invasive eye tonometer. Results from the first year of the student projects, as well as qualitative assessment of their experience, is presented. Several institutional challenges were also identified.


Author(s):  
Sasha Gollish ◽  
Bryan Karneyc

The motivation for this paper was two-fold; first to examine the types of textbooks that are being used to teach calculus to undergraduate engineering students in the Canadian Universities; and, second, to assess whether these textbooks do a "good job" at teaching calculus to undergraduate engineering students.The calculus textbooks used by engineering faculties across Canada were found through an online search, either by downloading a course syllabus or through a course website. Research into these various textbooks was done through the various textbook company websites and other articles. A review of the various textbooks was provided. In addition, select calculus textbooks were selected for a more thorough review of teaching differentiation.More often universities are choosing calculus textbooks that are rooted in engineering.


Author(s):  
Gabrielle Lam

A new first-year biomedical engineering laboratory course was created using a problem-based learning approach. Centered on four semi-structured design projects and experiments, the laboratory course was designed to facilitate meaningful experiential learning. Preliminary analyses of survey results suggest that the semi-structured nature of lab activities is viewed both positively and negatively by students, depending on their perception of preparedness for the project. Its correlation with student performance will be better understood with thorough study of other components of survey results.


Author(s):  
Krishnil R. Ram ◽  
Roneel V. Sharan ◽  
Mohammed Rafiuddin Ahmed

Of late, there is a growing need for quality engineers who have the ability to solve complex engineering problems with reasonable knowledge of ethics and economics. This has led many universities to pursue accreditation by professional engineering bodies. While the accreditation process installs a standardized system of quality teaching, it is important that the engineering entrants have a degree of understanding that allows implementation of quality teaching methods. This study looks at the performance of first year engineering students in a bid to identify major issues that students face in a Bachelor of Engineering program. The learning of students in the School of Engineering and Physics at the University of the South Pacific is influenced by interactions of at least 12 different cultures from the 12 member countries of the university. The study looks at how students perform across cultures in the first year mechanical engineering courses, mainly engineering mechanics and engineering graphics & design. The general trend over the last five years shows that while the student numbers in the program have been increasing, student performance in one course seems to be improving but declining in the other; the two courses differ considerable in contents, required skill sets, and assessment methodologies. The study also presents possible reasons for the varied performance by considering issues such as cultural and academic backgrounds, use of teaching tools and resources, and revisions to the course and program and looks at how multi-cultural engineering education can be improved. The number of female students taking up engineering as their major is also looked at and positive trends are seen with female participation increasing from 7.6% in 2008 to 13.9% in 2013.


Author(s):  
Sara B. Smith

This chapter per the author discusses challenges faced by first year pre-engineering students. Also discussed are several topics taught within the curriculum including: the engineering design process, sketching, measurement, the elements and principles of design, and three-dimensional modeling. The chapter proposes a design project for engineering students that would tie all of these concepts together to provide an additional learning opportunity for students and more relevant practice of skills like isometric sketching, creating three-dimensional computer-aided design models, and measurement. Samples of student work from the project are included.


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