This document provides an introduction to phonology, which is the study of sound systems in languages. It discusses key concepts like phonemes, allophones, and phonetic elements. The document outlines categories of phonology like vowels and consonants. It describes features of speech like stress, intonation, and rhythm. The document also discusses the importance of phonology for language learning, noting how sounds are linked and how pronunciation impacts spelling. It provides examples of classroom activities to teach pronunciation. The conclusion emphasizes the importance of teachers having strong phonological knowledge to teach students.