1) The document describes the implementation of interactive learning exercises in German for primary school students based on learning analytics measurements. Five different exercises were created to help students learn orthographic skills in German.
2) A field test with 21 third grade students evaluated the exercises based on how clear the instructions were, how independently the tasks could be solved, how fun the exercises were, and the desire to complete the exercises at home. Data analysis found issues with some exercises that could be improved.
3) Future work includes enhancing the usability of current exercises, adding new exercises, accessing usage data through an API, and creating mobile versions of the exercises for tablets and smartphones.