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Born between 5.5 and 10 pounds. They are normally 18 to 20 inches long at birth.
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Born with rooting and grasping reflexes.
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When the childs head is turned to the side, its arms move. This is believed to be a precurser to hand eye coordination.
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Although born with this reflex, it peaks at two months. This allows the the child to protect itself from things that startle it.
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Around this time, instead of just looking and studying the edges of things, the child will begin investigating and looking at details of objects.
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By the end of 3 months, the child should be able to raise its head on its own.
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If the childs back is stroked it will turn toward that side.
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By this time, the baby should be able to fixate on an object for long periods of time.
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By the end of month 4, the child should be able to smile.
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Around this time, the childs vision becomes more attuned and can see color.
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The child will begin crying less.
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By this time, the child should be able to conciously grasp objects.
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Around this time, the child will begin to coo.
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By this time, children 6 months and older have been found to stay away from areas that looked dangerous like a dropoff. This is believed to be because of their crawling experience.
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Around this time, the child should begin to babble. This will include every sound a human is possible of making.
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The child should be crawling by this time. May also be able to stand with assistance.
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Later in the first year, babies begin to make sounds that sound more like the languages around them.
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The child may begin to walk between 9 and 18 months.