Drama teachers instruct students in a recreational context in the various theatrical genres and dramatic expression forms, such as comedy, tragedy, prose, poetry, improvisation, monologues, dialogues etc. They provide students with a notion of theatre history and repertoire, but mainly focus on a practice-based approach in their courses, in which they assist students in experimenting with and mastering different dramatic expression styles and techniques and encourage them to develop their own style. They cast, direct and produce plays and other performances, and coordinate the technical production and the set, props and costume usage on stage.