Abstract: An interactive instructional system realizing an eventstream based educational methodology and enabling an interactive, adaptive learning environment. Continuously tracking and evaluating learner interaction, the system creates and updates a profile of the learner's cognitive style and achievement level. Using this cognitive profile, the system adapts its presentations to the learner's cognitive style and demonstrated ability. Presentations take the form of eventstreams, which are branching sequences of multimedia objects called events. Some of the events contain substantially similar content presented in differing ways so that, using the learner's cognitive profile, the system can select the event that results in the greatest comprehension of the presented material. This selection is accomplished using a utility function that is based on the cognitive profile and that provides a measure of the teaching utility of each of the different cognitive styles.

Abstract: A storage container for a disc includes case member (10) including a cover member (16), a base member (18), and a hinge member (20) for joining the cover member (16) to the base member (18). The hinge member (20) allows the base member (18) and cover member (16) to pivot between a coplanar open position and an overlapping parallel plane closed position. A tray member (14) is also included that has a proximal end (96), a distal end (94), a disc receiving portion (98) disposed adjacent to the proximal end (96) and a raised platform portion (182). The raised platform portion (182) is disposed adjacent to the distal end (99).