Phonology is the study of how languages organize their sounds. Each language has its own rules or constraints on what sounds they use, what combinations of sound are allowed, and how sounds change in different environments. This module will first look at some of the patterns of English but will then explore a number of phenomena across the world's languages. Problem sets, or small linguistic puzzles, will help us figure our patterns and train us to look for other patterns in the languages we encounter. This module can be taken by itself or as part of a larger Introductory Linguistics sequence of modules. However, it is helpful if you have taken phonetics or have some familiarity with the IPA.