Articulation focuses on the production of speech sounds. Phonology is a subset of this area, that looks at the production of speech sounds through the use of speech patterns. Therapy in this area addresses therapy from that perspective rather than by single sound error. By age 8, it is expected that a child should have mastered all speech sounds.
Age 3– b, p, m, n, w, h, vowels,diphthongs,syllable deletion, final consonant deletion.
Age 4- k, g, t, d, ng, y, stopping
Age 5—f, v, clusters
Age 6—l Age 7—sh, ch, j, zh
Age 8—r, s, z, th
Mild:up to 30 minutes/week service
Moderate:31 to 60 minutes/week service
Severe: 61 to 90 minutes/week service
Profound:91+ minutes/week