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Head sags when not supported. Raises head slightly when lying on stomach. Wraps fingers around objects when placed in palm. Average weekly weight gain is 5 to 6 ounces until 6 months. Average monthly height growth is 1 inch until 6 months.
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Switches from reflexes to voluntary body movements. Sits when supported with minimal head bobbing. Can make fists with both hands. Turns head towards bright colors. Visually follows moving objects.
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Can chew and bite. Can reach for objects and pick them up. Rolls from stomach to back. Average weekly weight gain is 3 to 5 ounces for next 6 months.
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Crawls with one hand full. Crawls up stairs. Builds a tower of two blocks. Gets down from standing. Clasps hands or bangs objects together.
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Crawls on hands and knees. Birth weight is tripled. Walks with help. Drinks from a cup and eats from spoon with help. Sits without support.
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Soft spot on top of head closes. Abdomen protrudes. Imitates housework. Needs 10 to 12 hours of sleep each night. Walks without help.
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Average yearly weight gain is 4 to 6 pounds. Gait is steadier and more like an adult.
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Primary teeth complete. Can build tower of 8 blocks. Copies circle from model. Throws ball about 4-5 feet.
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Average yearly weight gain is 4 to 6 pounds. Begins to use scissors. Balances on one foot for 5 seconds. Runs easily. Rides a tricycle. Uses a toilet.
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Balances on one foot for 4-8 seconds. Jumps from step. Cuts straight with scissors. Copies a circle.
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Skips using alternate feet. Catches large balls. Bathes self. Walks backwards toe to heel.
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Climbs, skips, hops, and gallops. Learning to ride bikes.
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Dexterity increases. Skates, rides bikes. Agility and coordination improves. Motor skills improve. Girls have sudden growth spurts.