2 – 4 Weeks

Responds to sounds by startling, blinking, crying, quieting, or breathing

2 – 4 Weeks

Looks at face and follows with eyes

2 – 4 Weeks

Responds to parent’s face and voice

2 – 4 Weeks

Moves arms, legs, and head

2 – 4 Weeks

On stomach, lifts head momentarily

2 – 4 Weeks

Flexed posture

2 – 4 Weeks

Can sleep for three of four hours at a time

2 – 4 Weeks

Can stay awake for one hour or longer

2 – 4 Weeks

When crying, can be consoled most of the time, by being spoken to or held

2 Months

Coos and vocalizes reciprocally

2 Months

Pays attention to voices, other sounds, sights

2 Months

Smiles responsively

2 Months

Shows pleasure with parents

2 Months

Lifts head, neck, and upper chest with support of forearms while on stomach

2 Months

Has come control in upright position

4 Months

Babbles and coos

4 Months

Smiles, laughs, and squeals

4 Months

On stomach, holds head erect and raises body on hands

4 Months

Rolls over from stomach to back

4 Months

Opens hands, holds own hands, grasps rattle

4 Months

Good head control

4 Months

Reaches for and bats objects

4 Months

Recognizes parent’s voice and touch

6 Months

Babbles reciprocally

6 Months

Says “dada” or “baba”

6 Months

When pulled to sit, has no head lag

6 Months

Sits with support

6 Months

Stands when placed

6 Months

Grasps and mouths objects

6 Months

Shows differential recognition of parents

6 Months

Transfers cubes from hand to hand

6 Months

Rakes in small objects

6 Months

Self-comforts

6 Months

Smiles, laughs, squeals, imitates razzing noise

6 Months

Turns to sound

6 Months

May have first tooth

9 Months

Responds to own name

9 Months

Understands a few words

9 Months

Babbles

9 Months

Crawls, creeps, or scoots

9 Months

Sits unsupported

9 Months

Poles with fingers, shakes, bangs, throws, drops objects

9 Months

Plays peek-a-boo or pat-a-cake

9 Months

Feeds self with fingers

9 Months

May show anxiety with strangers

12 Months

Pulls to stand, cruises, and may take a few steps alone

12 Months

Plays pat-a-cake, peek-a-boo, or so-big

12 Months

Points

12 Months

Bangs blocks together

12 Months

Says 2-4 words, imitates vocalizations

12 Months

Drinks from cup

12 Months

Looks for dropped or hidden objects

12 Months

Waves “bye-bye”

12 Months

Feeds self

15 Months

Says 3-6 words

15 Months

Can point to a body part

15 Months

Understands simple commands

15 Months

Walks well

15 Months

Stoops

15 Months

Climbs stairs

15 Months

Stacks two blocks

15 Months

Feeds self with fingers

15 Months

Drinks from a cup

15 Months

Listens to a story

15 Months

Tells what he/she wants by pulling, pointing, or grunting

18 Months

Walks backwards

18 Months

Throws ball

18 Months

Says 15-20 words

18 Months

Imitates words

18 Months

Uses two-word phrases

18 Months

Stacks three blocks

18 Months

Uses a spoon and cup

18 Months

Listens to a story, looking at pictures and naming objects

18 Months

Shows affection, kisses

18 Months

Follows simple directions

18 Months

Points to some body parts

18 Months

Scribbles

18 Months

Pulls a toy along the ground

24 Months

Goes up and down stairs one step at a time

24 Months

Kicks ball

24 Months

Stacks five blocks

24 Months

Uses at least 20 words, two-word phrases

24 Months

Follows two-step commands

24 Months

Imitates adults

3 Years

Jumps

3 Years

Kicks ball

3 Years

Rides tricycle

3 Years

Knows name, age, and sex

3 Years

Copies circle, cross

4 Years

Sings a song

4 Years

Draws a person with three parts

4 Years

Distinguishes fantasy from reality

4 Years

Gives first and last name

4 Years

Builds a 10 block tower

4 Years

Hops on one foot

4 Years

Throws overhand ball

5 Years 

Dresses self without help

5 Years

Learns address and phone number

5 Years

Can count on fingers

5 Years

Copies triangle or square

5 Years

Draws person with head, arms, and legs

5 Years

Recognizes most letters and can print some

5 Years

Plays make-believe

6 Years

Ties his/her own shoes

6 Years

Dresses self completely without help

6 Years

Catches a small bouncing ball, such as a tennis ball, with one hand

6 Years

Can tell age correctly

6 Years

Repeats at least 4 numbers in a proper sequence

6 Years

Skips on both feet