"Circling" is the practice of asking a series of simple questions about a statement, all in the target language. It is intended to provide repetition of the target vocabulary in context and enable students to learn the vocabulary, grammar and phonology of their new language in a holistic way. There are four basic types of circling questions: "yes" questions, "no" questions, either/or questions, and "wh" questions such as what, where, when, and how many. There are also more advanced circling techniques which teachers can optionally include, such as the "three for one" and false statements. The teacher expects a response from the students after each statement or question, to check whether they have understood. If the teacher says a statement, then the students show that they understand by responding with an expression of interest such as "Oooh!" or "Aaaaah". If the teacher asks a question, then the students answer the question.