2. describe physical developments that occur in infants between birth and their first birthday.

Birth, totally dependent on mothers love attention, facial expression, and language., learns how 2 manipulate parents through crying, being hurt, like falling off of couch. shows interest, laughter, exploring new objects, and experiences, up 2 5 mo.
5mos. sitting up, rolling over, attempting to crawl, then finally standing against furniture, using furniture as a brace to travel, as well as crawling. 7mos. crawling, climbing, playing constantly with parents help..practicing to walk. 8mos. stronger, more independent, although always near parents ... 9-12 mos. testing boundaries, needs interactive toys like puzzles, baby Walker, bouncing device attached to a solid doorway...and floor time always..1st bday= putting all nice things in attic..vomiting when sick..walking independently, exploring everything shouldn't discover..electrical outlets, and opening doors, cupboards, especially bathroom...then potty training...hop this helps...