Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Physical Development, Middle Childhood
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Growth between the ages of 6 and 10 usually occurs in spurts but progresses at an overall steady pace. Most children gain an average of 7 lb (3 kg) and 2.5 in. (6 cm) each year. The loss of baby teeth and their replacement by permanent teeth is one of the most dramatic signs of physical development for this age...
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Adolescence is a time of rapid growth in height and weight and of physical changes throughout the body. Most of these changes occur near the time of puberty, which in the United States and Canada usually begins for girls between the ages of 9 and 11, and for most boys between the ages of 9½ and 13. Breast buds—slight...