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Unformatted text preview: Chad 60 5-12 Oct 09 INFANCY & TODDLERHOOD PHYSICAL CHARACTERISTICS & CHANGES Growth birth= 7.5 lbs 6 mo= 15 lbs 1 yr= 22 lbs 2 yrs= 28 lbs birth= 19 in 2 yrs= approx. 1/2 of adult height Gross Motor Development large muscle groups @ birth, head is so large cannot really hold it up on neck some movement in neck no core strength cephalo-caudal development acquisition of control of muscles, from head down 1 mo= upper body & arms; pseudo-pushup 5 mo= lower torso & core; swiveling hips, some ability to sit up when supported 5-6 mo= ability to roll over from back to tummy & vice-versa 7-9 mo= sitting up without support 7-9 mo= crawling, butt-scooting, on all fours, pull with arms, etc. 8 mo= pull to standing position with support, lock knees but cant unlock so must fall to sit down 8-9 mo= cruising; hold onto supporting surfaces for vertical stability and take small steps 10-11 mo= control of ankle & flattening foot to enable true walking, w/ support 12 mo= first autonomous steps- true walking but very still unbalanced & easily tipped 14 mo= more secure in walking 18-24 mo= faster walking, waddling 24-32 mo= crawl up stairs, or stairs up one at a time; down stairs still difficult 36 mo= walking down stairs Fine Motor Development small muscle groups 6 weeks= social smile 2-3 mo= use hand as palette, cant yet control fingers & grasp 4-5 mo= poking with individual fingers 5-6 mo= pinching with fingers, esp. index finger & thumb very important in service of bringing things to explore to self mo= forks, spoons, pencils, markers, etc.; finer gripping skills first grip with fist much later hold with fingers to control various angles and pressures Chad 60 5-12 Oct 09 Teeth 5-6 mo= first teeth, 4 front teeth (2 top, 2 bottom), sharp teeth allowing biting much greater risk of choking because can bite things but cant break down to allow easy swallowing rest of teeth gradually come in during next few months first set of teeth began development in womb teeth fall out in same order they came in; around 1st & 2nd grade Potty Training combo of social expectations and childs biological readiness some places in world claim 1 yr olds can be potty trained Requirements for potty training: recognition of bodily signals/ sensations that indicate need to potty control over sphincter muscles responsible for closing off bladder & rectum so they can get to right place 28 mo.=Myelinization, muscle control development, etc. ready for potty training28 mo....
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