Learning the Sounds Learning the Sounds Children master sound production at different ages.
Acquisition also differs from one child to the next.
Mastery is considered the ability to produce a sound appropriately in 2 of the 3 positions in words. The chart below suggests that most children master these sounds at these ages. The chart suggests that it is mastered at age 4. When a 4 year old says ladder, it may sound more like laddo or even yaddo , depending on his or her level. This is perfectly normal and should not cause concern.