During their first 5 years, children learn the basic skills necessary for their future development. The four main areas are physical skills, manual (hand) dexterity, language, and social skills.          

In the normal development of a child, the following ages indicate when the ability normally begins.

Can lift head to 45º - by 3 months

Startled by loud sounds - till 2 months

Can roll over - 1 1/2 - 4 1/2 months

Can bear weight on legs - 1 1/2 - 5 months

Squeals - 1-4 months

Smiles spontaneously - 1-5 months

Looks at own hands - 1-4 months

Holds hands together - 2-4 months

Reaches out for a rattle - 3-6 months

Makes cooing sounds - 3-5 1/2 months

Turns toward voice - 3 1/2 - 6 1/2 months

Passes rattle from hand to hand - 5-8 months

Can sit unsupported - 5 1/2- 8 1/2 months

Says "dada" and "mama" to anyone - 5 1/2 - 9 1/2 months

Can crawl - 6-10 months

Can stand by hoisting up own weight - 6-10 months

Plays with feet - 6-8 months

Plays peek-a-boo - 6-10 months

Can grasp object between finger and thumb - 7-11 1/2 months

Eats with fingers - 8-12 months

Can stand without help - 9-14 months

Can pick up a small object - 9-14 months

Says "dada" and mama" to parents - 9-13 months

Can walk holding on to furniture - 9 1/2 - 14 1/2 months