Infancy

>The infant period is from 1 month to 12 months. Children typically double their birthweight at 4 to 6 months a nd triple it at 1 year.

>Infants develop their first tooth at about 6 months; by 12 months, they have to six to eight teeth.

>Important gross motor milestones during the infant year are lifting the chest off a bed at 2 months, sitting at 6-8 monts, creeping at 9 months, "cruising" at 10 to 11 months, and walking at 12 monts.

> Important fine motor accomplishments are the ability to pass an object from 1 hand to the other hand (7 months) and a pincer grasp (10 months)

> Important milestones of language development during the first year are differentiating a cry (2 months), making simple vowel sounds (5-6 months) and saying two words beside mama and dada (12 months). The more infants are spoken to, the easier it is for them to acquire language.