Beyond Simple Sequencing: Sequencing Of Learning Activities Using Hierarchical Graphs

One of the main challenges when developing Elearning systems is the capability to adapt the learning experience to different users. This adaptability requires a flexible scheme for sequencing the learning material to different students. Content sequencing has been recently included in standardization efforts such as SCORM or IMS, namely IMS Simple Sequencing. But, is this sequencing scheme generic enough to support a wide variety of strategies? Is there a need for a "non-simple sequencing"? This document presents a procedure to translate a powerful sequencing mechanism based on hierarchical graphs specifying arbitrary transitions between learning units into the IMS Simple Sequencing standard. It can be seen that even though the translation can be performed correctly, several aspects have a non-trivial translation, suggesting areas for further exploration.