By 4 months…
Turn toward sounds
Smile back when being smiled at
Show interest in people’s faces

By 6 months…
Smile often when playing with caregiver
Coo or babble when happy
Cry when unhappy

By 9 months...
Will share smiles, sounds or other facial expressions back with caregiver
Turns head when name is called
Enjoy social play (peek-a-boo)

By 12 months…
Use simple gesture (bye-bye)
Make sounds to represent something (ma, da, ba)
Imitate actions (clapping hands)
Respond to “no”

By 18 months…
Simple pretend play (talk on a toy phone)
Point to objects of interest (book, dog, etc.) and may say “look”
Use several words unprompted (5 to 10 words)

By 24 months…
Use and understand 50 words
Use two to four word phrases
Become interested in other children
Point to picture or object when named

By the end of 3 years…
A child will use 4 - 5 word sentences
Imitate adults and playmates
Plays make believe with dolls or toy animals
Answer what, where and who questions

By the end of 4 years…
Cooperate with other children
Follow 3 step commands

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