This document discusses phonemes, the smallest units of sound that distinguish words in a language. It defines phonemes and explains why learning phonemes is important for second language English learners. It provides charts of the English consonant and vowel phoneme systems showing their place and manner of articulation. Examples are given of different consonant phoneme types like plosives, fricatives, affricates, nasals, and approximants. The document concludes with suggestions for teaching phonemes through songs, silent teaching methods using charts, and physical drills.