when do sounds develop in speech
Later (3 â 8 yrs) sh zh (measure) l r s zth (think) th (that) The chart above describes the approximate order that childrenâs speech sounds develop. Speech sounds develop from the time the child starts using words until the early years at school. Although the age range extends to 8 years, most children will be using these sounds earlier than that 1. Speech intelligibility. Children's speech generally gets easier to understand as they get older. Here's a guide 2: