It was very interesting to read your reflection and thoughts on your special task! I am impressed by the way you were able to include all three aims in one task and the way you carried it out. I am excited to hear how it all went and what your thoughts are now. Did it turn out the way you thought and did you find an interesting ”connection between listening comprehension, writing and grammatical competence”?
I beileve the motivation part is of great importance here, and I think you have managed to do so by the fact that you engaged yourself to find something that was of interest for the pupils. You mention that you had a gift for the winner, nevertheless you also say that you ”read outloud sentences that you found particularly good”. I think this is a good way to motivate your pupils. Even if the names were not revealed, I believe this encouraged the ones who did a good job and gave inspiration to the ones that needed it. It is so important to give good credit back to the pupils. I am courious though as to how many sentences you read outloud?
I think this is a task that could be used with success in both elementary, middle school and high school. I am sure that I will try this out myself!