Development and implementation of a tablet-based exam app for engineering courses

For large enrollment courses, such as Statics, Dynamics, Fluid Mechanics, Solid Mechanics, Thermodynamics, the use of computers (laptops and tablets) in the classroom can save instructor time. However, there are numerous problems with computer-based exams, especially when the students are allowed to access online course materials (eBook, homework, etc). Previously, the author used student-supplied laptops for web-based exams in the classroom, but this has become problematic over the years due to the increased sophistication of communication software (Twitter, Facebook, Skype, SnapChat, etc.). It is no longer reasonable to expect the instructor and TAs to be able to monitor student laptops during exams. To solve this issue, android-based tablets with special apps have been developed and implemented into two fundamental engineering courses, Fluid Mechanics and Solid Mechanics (Mechanics of Materials). This paper first examines both the selection process for the Android-based tablets and the development process for applications (apps) required for testing. Both Android and iOS tablets were considered. Based on cost and ease of system customization, Android-based tablets were selected. Two different apps were developed for use for tests. The first app, examApp permits the student to access the online text and it records the student's choices. It has numerous security features that limit access to the exam only on the tablets provided and only during the test time. All graphics are vector-based so they are crisp on high resolution screens. Included in the examApp was an admin (or instructor) page that provides the instructor and TAs real-time information about the exam while in progress. This includes scores, percent correct for a given problem, students activity, graphs, and direct communications to all students. The second app, eBookApp, allows the student access to the online eBook used for the class. However, it blocks the student from other online web sites or material. The Android operating system itself was modified to limit access to standard apps like email, app stores, social networks, and even browsers. The apps were developed using Adobe AIR development framework due to its relatively easy development of web and mobile apps when compared to native programming or HTML5 with JavaScript. AIR also avoids programming the same app three times (web browsers, Android and iOS). The successful results (and lessons learned) using tablets for in-class testing for multiple engineering courses are presented. © 2016 American Society for Engineering Education. All rights reserved.