This sound is /h/, as in the word 'high.' We strategically teach students to treat this as a stop phoneme, so be careful not to add a vowel sound after it. This is not /huh/; it’s just /h/. The International Phonetic Alphabet (IPA) represents this phoneme with the following symbol: h. In the early stages of the curriculum, Once’s instructional content represents the sound with a symbol that is made by typing ‘h’ in a specialized font. This specialized orthography helps beginning readers (pre-kindergarten students through early elementary grades) learn letter-sound correspondence more quickly. By the middle stages of the curriculum, the specialized orthography is phased out and replaced by letters in a serif font.