physical development
social and emotional development
intellectual development
language development
development of two year olds
100

stands holding furniture, stands alone for a second or two, taking a few steps independently 

1 year milestones

100

showing interest in faces and quieting when touched

newborn milestones

100

smiling at people, cooing, preference for familiar faces

milestones of 3 month old

100

babbling, early words such as mama, uses exclamations, imitates 

milestones of a 9 month old 
100

language growth, increased problem solving skills, pretend play, follows simple instructions 

intellectual development

200

can lift head or chest when lying on stomach, supports upper body with arms, brings hands to mouth

3 month year old milestones

200

showing fear of strangers, clinging to familiar adults, experiencing separation anxiety 

9 month old milestones

200

responding to their name, showing emotion through laughter, reaching for desired toys, exploring objects by putting them in their mouth

milestones for a 6 month old

200

uses sounds to express emotions, understands words and name, makes eye contact  

milestones of a 6 month old

200

developing sense of self, increasing independence, wide range of emotions 

social and emotional development

300

begins to control reflexes, can bring hands to face, can push down on surface with feet

milestones at birth

300

laughing, enjoying social games, becoming more aware of familiars vs strangers

milestones of a 6 month old

300

explores objects by banging, shaking, or throwing, finds hidden objects, follows simple commands 

milestones for a one year old 

300

expressing emotions with laughing or crying, making wide range of new sounds, starts making constant sounds 

milestones of 3 month olds

300

combining two words into phrases, using 50 to 75 words, understanding two step directions 

language development

400

rolling over, sitting with support, and pushing up with straight arms 

6 month old milestones

400

showing affection for familiar people, being shy around strangers, crying when parent leaves  

milestones of a one year old

400

follows moving objects with eyes, looks for source of sounds, maybe stop crying when hearing a voice 

milestones of a newborn

400

uses words, understands words, imitates words, sounds more like speech

milestones of one year old 

400

advances in fine and gross motor skills, such as running, kicking a ball, and climbing furniture 

physical development

500

sitting without support, crawling, pulling up to stand

9 month milestones

500

becoming more communicative and expressive and enjoying playing with people 

milestones of a 3 month old 

500

engages in interactive games, imitates speech or gestures, starts to understand cause and effect, better depth perception 

milestones of a 9 month old

500

cries to express needs, smiles, turns head towards sounds, quiets when spoken to

milestones of newborn

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