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 standard-ization efforts such as SCORM or IMS, namely IMS Sim-ple 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 arbi-trary transitions between learning units into the IMS Sim-ple 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. Key Words IMS, content sequencing, hierarquical graphs