IDOB
The Index of
Developmental Observations
CDC
Milestone Category
Movement/Physical Development
Milestone Name
Expected Age
Can hold head up and begins to push up when lying on tummy
2
Makes smoother movements with arms and legs
2
Holds head steady, unsupported
4
Pushes down on legs when feet are on a hard surface
4
May be able to roll over from tummy to back
4
Can hold a toy and shake it and swing at dangling toys
4
Brings hands to mouth
4
When lying on stomach, pushes up to elbows
4
Rolls over in both directions (front to back, back to front)
6
Begins to sit without support
6
When standing, supports weight on legs and might bounce
6
Rocks back and forth, sometimes crawling backward before moving forward
6
Stands, holding on
9
Can get into sitting position
9
Sits without support
9
Pulls to stand
9
Crawls
9
Gets to a sitting position without help
12
Pulls up to stand, walks holding on to furniture (“cruising”)
12
May take a few steps without holding on
12
May stand alone
12
Walks alone
18
May walk up steps and run
18
Pulls toys while walking
18
Can help undress herself
18
Drinks from a cup
18
Eats with a spoon
18
Stands on tiptoe
24
Kicks a ball
24
Begins to run
24
Climbs onto and down from furniture without help
24
Walks up and down stairs holding on
24
Throws ball overhand
24
Makes or copies straight lines and circles
24
Climbs well
36
Runs easily
36
Pedals a tricycle (3-wheel bike)
36
Walks up and down stairs, one foot on each step
36
Swings and climbs
60
Hops and stands on one foot up to 2 seconds
48
Catches a bounced ball most of the time
48
Pours, cuts with supervision, and mashes own food
48
Stands on one foot for 10 seconds or longer
60
Hops; may be able to skip
60
Can do a somersault
60
Uses a fork and spoon and sometimes a table knife
60
Can use the toilet on her own
60