teaching week pattern

The weeks that an activity is available. An activity's teaching week pattern consists of the weeks that are common to the availability pattern of the activity and the availability pattern of the module that it is part of. For example, if an activity is available in weeks 1-28, but its module is available in weeks 1-8, 11-19, 24-31, 34-41, then the activity's teaching week pattern is 1-8, 11-19, 24-28.