duration

• Obligation:  See Application Profiles
• Occurrence:  See Application Profiles
• Conditions:  See Application Profiles
• Scheme:  See Application Profiles

Element Semantics (Definition)

The recommended time or number of sessions needed to effectively use the entity being described.

General

• Name:  duration
• Label:  Duration
• Namespace:  http://purl.org/gem/elements/
• Registration Authority:  GEM Consortium
• Notes:  None

Best Practices

1. The Duration element refers to the length of time necessary to the effective use of the resource as a teaching/learning device.
2. Do not use the Duration element to record the literal duration of the resource–e.g., the actual 50 minutes of a video. Rather, record the time needed to effectively use that video in the learning environment.

Metadata Encodings Examples

• Resource Description Framework (RDF/XML)
  

  <?xml version='1.0' encoding='UTF-8'?>
  <rdf:RDF xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
      xmlns:gem='http://purl.org/gem/elements/'>
  <rdf:Description>
      <gem:duration xml:lang='en'>
      Three 45-minute class sessions.
      </gem:duration>
  </rdf:Description>
  </rdf:RDF>

• XML (Tags & Attributes)
  

  <?xml version='1.0' encoding='UTF-8'?>
  <record xmlns:gem='http://purl.org/gem/elements/'>
  <gem:duration xml:lang='en'>
      Three 45-minute class sessions.
  </gem:duration>
  </record>

• Crosswalks
  IEEE LOM: 5.9:Educational.TypicalLearningTime
  MARC: To be done