In language learning, taboo language or subjects are areas that are regarded as prohibited by the culture of the learners or the teacher, therefore inappropriate for the classroom.

Tag questions are short questions which speakers use at the end of a statement.

The target language is the language learners are studying.

A task-based syllabus is based on task-based learning, an approach where learners carry out tasks such as solving a problem or planning an activity.

Task-based learning is an approach to language learning where learners are given interactive tasks to complete.

A teacher-centred approach is one where activity in the class is centred on the teacher.

A teacher diary is a diary where a teacher records what happens in their classes and their thoughts about it.

Teacher role refers to the different functions a teacher can have in a class.

Teacher talking time (TTT) is the time that teachers spend talking in class, rather than learners.