Milestones are things that most children can do by a certain age.

It is important to look at developmental milestones regularly, and connect with speech-language pathologists when children fall behind.

It is not that we are concerned that children will not "talk" by the time they are in kindergarten.

It is that if they are behind in their speech & language development, there are things that we can do to help them express themselves more effectively, and PREVENT later reading (and other) challenges.

The earlier we intervene, the easier it is to nurture brain development so that they succeed with reading at both the word-level and the meaning-level later on.

This video how effective it is when we intervene early rather than "wait and see".