How can I prepare for the stimulus card given in the oral exam?

Firstly, make sure you know all of the topics that could come up on the stimulus card and be sure to revise key vocabulary in connection with these topics. Make cards with vocabulary and memorise these on a daily basis leading up to the exam. Secondly, it may be useful to learn some key phrases for the simpler opening questions about the stimulus card such as 'Die Karte zeigt, dass...' or 'Es steht fest, dass...'. Finally, it is important that you can relate to the card and create your own viewpoint. Practice with previous cards and exercise new ideas and opinions - practice makes perfect!