The 12-hour clock is a time convention in which the 24 hours of the day are divided into two periods: a.m. (from the Latin, ante meridiem, meaning before midday) and p.m. (post meridiem, meaning after midday). Each period consists of 12 hours numbered: 12 (acting as zero), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11.
Girlsâ Average Height. You can review the average height of a toddler-aged child using growth charts, such as those available online at Kids Growth. The average height for a 12-month-old girl is 30.5 inches, and the normal range goes from just over 27 inches to about 31 inches.ust like average height, average weight is estimated using growth charts. The average weight for a 12-month old girl is about 20 lbs., ranging normally from just over 19 to 27.5 lbs. The average weight for a 24-month-old girl is about 26.5 lbs.
Toddler beds hold mattresses that are the same size as crib mattresses, give or take about one-half an inch. They usually measure 27 inches wide by 52 inches long. The small size makes it easy to place waterproof pads or sheets on top of them, which will come in handy if your toddler is working on potty training.tandard twin beds, also known as singles, hold mattresses that measure 39 inches wide by 75 inches long. Extra-long twins are 5 inches longer. Small children will fit this size of bed perfectly, but twin beds can accommodate adults, as well. 1  Toddler.