Teaching pronunciation involves teaching the sounds, stress, rhythm, and intonation patterns of a language. It includes identifying phonemes - the smallest units of sound that distinguish meaning. Teachers should provide authentic models, encourage listening practice, and integrate pronunciation into other lessons. They should also teach recognition before production and be aware of how a student's first language may influence their pronunciation in a second language. Effective techniques include using phonetic scripts, minimal pairs, and awareness of universal processes of pronunciation acquisition.