The weekly exercise problem sets appear on this page every Thursday. Example solutions to the exercise problems are also published here weekly.
The solved exercises are given in by showing them to the course assistant at one of the exercise sessions.
If you absolutely cannot make it to the exercise session for some well-justified reason, then you can return photos or scans of your solutions to the return folder below by the endtime of the last exercise session of the week. In this case you must send email to the teacher (firstname.lastname@example.org), and explain why you could not make it to the exercise sessions.