I came up with the idea to write instructions to Google Translate and have them read in a machine voice. Surprisingly, it worked. At the beginning of the lesson, I announced that I could not speak, that I needed them to be exceptionally quiet (normally I want to be alive in class and let the pupils work together if they are unsure of something), and that they have to take me into account. It worked in all classes, even the seventh, where I expected there to be problems.
At the beginning of the lesson, I announced that I could not speak, that I needed them to be exceptionally quiet (normally I want to be alive in class and let the pupils work together if they are unsure of something), and that they have to take me into account.