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1.1.3.2 The SCORM Sequencing and Navigation (SN) Book
The SCORM SN book is based on the IMS Simple Sequencing (SS) Specification [17], which defines a method for representing the intended behavior of an authored learning experience such that any SCORM compliant LMS will sequence discrete learning activities consistently.
The SCORM SN model defines how the IMS SS specification is applied and it is extended in a SCORM environment. It defines the required behaviors and functionality that SCORM compliant LMSs must implement to process sequencing information at run- time. More specifically, it describes the branching and flow of learning activities in terms of an activity tree, based on the results of a learner’s interactions with launched content objects and an authored sequencing strategy. An activity tree is a conceptual structure of learning activities managed by the LMS for each learner.
The SCORM SN book describes how learner- and system-initiated navigation events can be triggered and processed, resulting in the identification of learning activities for delivery. Each learning activity identified for delivery will have an associated content object. The SCORM RTE model describes how identified content objects are launched. The sequence of launched content objects, for a given learner and content structure, provides a learning experience (learner interaction with content objects); the SCORM
RTE Model describes how the LMS manages the resulting learning experience and how that learning experience may affect the activity tree.