CDC Developmental Milestones

Skills such as taking a first step, smiling for the first time, and waving “bye bye” are called developmental milestones. Children reach milestones in how they play, learn, speak, act, and move (crawling, walking, etc.). Below you can download the full checklist – from 2 months old to 5 years old – or watch video playlists of different Developmental Milestones sorted by language.

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