| 12.1 | How do school-age children's bodies and brains grow and development?
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| 12.2 | What are the nutritional and sleep needs of middle childhood?
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| 12.3 | What gains in motor skills typically occur at this age, and what kinds of physical play do boys and girls engage in?
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| 12.4 | What are the principal health and safety concerns in middle childhood?
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| 12.5 | What are some common mental health problems of childhood?
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