This sound is /ū/, as in the word 'use.' The International Phonetic Alphabet (IPA) represents these phonemes with the following symbols: ju. In the early stages of the curriculum, Once’s instructional content represents the sound with a symbol that is made by typing ‘shift + u’ 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.

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