Skill Progression 30-33 months 33-36 months 36- 42 months 42 -48 months 48-54 months 54-60 months A. Articulation/ Conveys ideas 75% intelligible May produce all 24 80% intelligible 90% intelligible 100% intelligible, sound production using pitch and consonants (stops: though errors on intonation /p, b, t, d, k, g/; /s, sh, r, l, z, zh, fricatives: /f, v, s, z, ch, j, th/ may h/, sh, th (as in persist “the” and “this”), 85% of children 85% of children Emerging 85% of children zh; affricates: /j, correctly correctly produce production of /r, l, correctly produce ch/ liquids: /l ,r/; produce the the following: s, ch, sh, z, j, v/ the following: glides: /w, j/; following: Initial sound: Initial sound: nasals: /m, n, ng/ Initial sound: /kw/ /ch, j, l, s, sh, y, /t, g, k, f, w/ Medial sound: bl/ Medial sound: /d/ Medial sound: /f, g, k, ng, p, t/ Final sound: /f/ /ch, j, l, s, sh, z/ Final sounds: Final sound: /l, ng /b, d, g, k, n, t/ ch, j, s, sh, r, v, z/ Produces all Demonstrates vowels few omissions or substitutions Produces some consonant clusters (e.g., st, sp, bl, fr, sw, etc.)
Skill Progression 30-33 months 33-36 months 36- 42 months 42 -48 months 48-54 months 54-60 months A. Articulation/ sound production Conveys ideas using pitch and intonation 75% intelligible May produce all 24 consonants (stops: /p, b, t, d, k, g/; fricatives: /f, v, s, z, h/, sh, th (as in “the” and “this”), zh; affricates: /j, ch/ liquids: /l ,r/; glides: /w, j/; nasals: /m, n, ng/ 80% intelligible 90% intelligible 100% intelligible, though errors on /s, sh, r, l, z, zh, ch, j, th/ may persist 85% of children correctly produce the following: Initial sound: /t, g, k, f, w/ Medial sound: /f, g, k, ng, p, t/ Final sounds: /b, d, g, k, n, t/ 85% of children correctly produce the following: Initial sound: /kw/ Medial sound: /d/ Final sound: /f/ Emerging production of /r, l, s, ch, sh, z, j, v/ 85% of children correctly produce the following: Initial sound: /ch, j, l, s, sh, y, bl/ Medial sound: /ch, j, l, s, sh, z/ Final sound: /l, ng ch, j, s, sh, r, v, z/ Produces all vowels Demonstrates few omissions or substitutions Produces some consonant clusters (e.g., st, sp, bl, fr, sw, etc.)