E-learning system and method

摘要

A control engine ( 12 ) downloaded by a server ( 1 ) to a student computer ( 2 ) instantiates panel objects ( 16 ) and multiple media objects ( 15 ) linked to each panel object ( 16 ). At any one time multiple media objects ( 15 ) operate simultaneously and in synchronism to generate multiple display and sound outputs for comprehensive learning output and student interaction. The media objects ( 15 ) operate autonomously, without even knowing their places in their respective hierarchies, thus allowing dynamic updates from the server (either server-driven or student-driven). Synchronization is achieved by the panel object activating the multiple relevant media objects for a panel and the media objects using time value attributes to control activation and termination times. The media objects access ( 84 )a stacking mechanism ( 82 ) in real time to determine a linked panel or media object to implement an operation in response to an event such as progression to a next panel. In addition to distributing objects in real time, the stacking mechanism ( 82 ) also dynamically modifies some objects by scripting or method invocation.