Dynamic pace control of e-lessons through time-scale modification.

摘要

The multimedia online student should be able to receive self-paced learning using time-scale modification (TSM). Using a slider control widget, the e-learner can speed up or slow down an audio/visual lesson without creating a "chipmunk" or "Mickey Mouse" effect. This research verified TSM benefits for online tutorials containing material judged technical.;An empirical study was performed using the first year engineered materials undergraduate class at l'Ecole Polytechnique of Montreal. Live observations were conducted with five (5) voluntary students and 30 survey responses were collected. Results show TSM use creates an efficiency gain and is generally perceived as being useful. The empirical data suggests TSM generated a 30% time saving but, the most promising benefit is the sense of control given to the user. Indeed, 70% of survey respondents report dynamically modifying the pace of instruction according to content difficulty. Though this research concerns only novice use of TSM, based on the strong case built through a lengthy literature review and these promising empirical results, we strongly recommend real-time dynamic pace control of audio/visual lessons through TSM be given to the individual e-learner. This will be accomplished by supporting TSM integration with existing online content development software. (Abstract shortened by UMI.).