A teaching scene or puppet master scene is a scene where one character proceeds to teach, give commands, and give instructions.
These are difficult as the scene partner will be challenging especially for new improvisers as one character is said to not have any information to add, while the other has to lead.
The roles don't have to be literal teachers, as any scene where one character is right and another is wrong or needs help could inadvertently mimic the dynamic of a teacher scene.
A successful character might be a teacher with other details outside of their job function. The successful student character can know how to do things.