**4.4 Realization of the didactical progress tracking**

The introduced DPT tracks the progress of the learners based on ACTIVITIES. The DAs have to send a progress update to the KM-EP after finalizing an ACTIVITY. From inside the running DA or with a control panel, the learners can switch to another DA. The learners only lose their progress within an ACTIVITY [22, 53]. A detailed overview and description of the implementation can be found in [22, 53].
