1 month gross motor
Head lag
Rounded back while sitting
Lifts and turns head to the side in prone position
1 month fine motor
Fist mostly clinched
Involuntary hand movements 
2 month gross motor
Raise head and chest
Head control improving
2 month language
Cooing
3 month gross motor skills
Raises head 45° in prone
Tiny head lag in pull to sit
3 months Fine motor skills
Holds hands in front of face with hands open
4 months gross motor
Lifts head and looks around
Rolls from prone to supine
Head lead body when pulled to sit 
4 months fine motor
Bats at objects
4 month language
Babbling
5 months gross motor
Rolls from supine to prone and back again
Sets with back up right when is supported 
5 months fine motor
Grasps rattle
6 months gross motor
Tripod sit
6 month fine motor
Releases objects in hand to take another
6 month language
Babbles nonspecific
7 months gross motor
Sits alone with some use of hands for support
7 months fine motor
Transfers objects from one hand to the other
8 months gross motor
Sits unsupported
8 fine motor
Gross pincher grasp (rakes)
9 months gross motor
Crawls with abdomen off the floor
9 months fine motor
Bangs objects together
10 month gross motor
Pull to stand
Able to cruise on objects
10 month fine motor
Fine pincer grasp
Puts objects into containers and takes them out
11 month fine motor
Offers objects to others and releases them
12 month gross motor
Walks independently
Sits down from standing position without assistance 
12 month fine motor
Feed self finger foods
Draw simple marks on paper
Turns pages in a book 
12 month language
Receptive language understands common words independent of context follows a one step gestured command
Expressive language first word, uses a finger to point to things imitate gestures and vocal
Signs of delay after independent, walking for several months, persistent tiptoe, walking failure to develop a mature, walking pattern 
