Major developmental milestones: 2 months old

(gross motor (1), fine motor (1), language (2), social/cognitive(2))

• lifts head when prone
• tracks past midline
• alerts to sound; coos
• recognizes parent; social smile

(Bold = commonly tested) 

Major developmental milestones: age 4-5 months

(gross motor (2), fine motor (1), language (3), social/cognitive(2))

• Rolls front to back, back to front (4 mo)
• Grasps rattle
• Laughs and squeals; orients to voice, begins to make consonant sounds
• Enjoys looking around, laughs

Major developmental milestones: age 6 months

(gross motor (1), fine motor (2), language (1), social/cognitive(1))

• sits unassisted 
• transfers obects, demonstrates raking grasp
• babbles
• demonstrates stranger anxiety

Major developmental milestones: age 9-10 months

(gross motor (2), fine motor (1), language (2), social/cognitive(2))

• crawls, pulls to stand
• uses 3-finger (immature) pincer grasp
• says "mama/dada" (nonspecific); first word at 11 mo
• waves bye-bye, plays pat-a-cake

Major developmental milestones: age 12 months

(gross motor (2), fine motor (1), language (2), social/cognitive(2))

• walks alone; throws object
• uses 2-finger (mature) pincer grasp
• uses 1-3 words; follows one step commands
• imitates actions; exhibits separation anxiety

• 15 months: 5 words
• 18 months: 8 words

Major developmental milestones: age 2 years

(gross motor (2), fine motor (1), language (1), social/cognitive(2))

• walks up/down steps; jumps
• builds tower of 6 cubes (age x 3)
• Uses 2-word phrases
• Follows 2-step commands; removes clothes

Major developmental milestones: age 3 years

(gross motor (2), fine motor (2), language (1), social/cognitive(2))

• Rides tricycle, climbs stairs with alternating feet (3-4 yrs)
• Copies a circle; uses utensils
• Uses 3-word sentences
• Brushes teeth with help; washes/dries hands

Major developmental milestones: age 4 years

(gross motor (1), fine motor (1), language (1), social/cognitive(2))

• hops
• copies a cross (square at 4.5 years)
• knows colors and some numbers
• exhibits cooperative play; plays board games

Major developmental milestones: age 5 years

(gross motor (2), fine motor (4), language (1), social/cognitive(2))

• skips, walks backward for long distances
• copies a triangle; ties shoelaces; knows left and right; prints letters
• uses 5 word sentences
• Exhibits domestic role playing; plays dress up

• 2 mo: coo
• 6 mo: babbles
• 1 yo: 2 words, obeys 1 step command
• 2 yo: 2-3 word phrases, obeys 2 step command

• 3 mo: holds head
• 4 mo: rolls both ways
• 6 mo: sits unsupported
• 9 mo: crawls, cruises
• 1 yo: walks
• 2 yo: walks up & down stairs 

• 6 mo: raking grasp
• 12 mo: throws object
• 15 mo: stacks 2 blocks
• 2 yo: stacks 6 blocks, turns pages of bookd

• 2 mo: recognizes parents
• 6 mo: stranger anxiety, enjoys looking around
• 9 mo: pat-a-cake, peekaboo
• 1 yo: imitates actions, comes when called
• 2 yo: parallel play