Indicator 3g

The teacher edition embeds adult-level explanations of advanced literacy concepts that build teacher subject-matter knowledge: precise phonetic/IPA notation for phonemes (e.g., the /ʊ/ phoneme in [E1]), linguistic structure of onset/rime and VC chunks ([E2], [E3], [E5], [E6], [E8]), and definitions of developmental reading phases such as the Full Alphabetic phase where students 'have successfully mapped graphemes to phonemes, including consonant digraphs, and initial and final consonant clusters' ([E2], [E5]). It also explains underlying concepts teachers must understand, such as the etymology and morphological logic of contractions and the grammatical job of the apostrophe ([E7]) and what punctuation signals to readers ([E9], [E10]). This structural evidence shows the teacher edition intentionally supplies professional, content-area explanations beyond mere student scripts.