Loops are short dialogues that can be repeated over and over again without stopping, like this one:
They provide a great exercise because they combine drill with creativity and emotion. In order for the repetition to work and for the dialogue to make sense, the students have to say the lines differently every time, using different gestures, movements, volume, intonation and so on.
The ambiguity of the dialogues allows for their use in different contexts, both prepared and improvised. Since the dialogues are short, they can be easily memorized; The students can quickly become fully involved in playing without needing to read from them. They can also improvise endings, perform them for each other, write them for homework and more.