| 9.1 | How do children's bodies change between ages 3 and 6? |
| 9.2 | What sleep patterns and problems tend to develop during early childhood? |
| 9.3 | How do children's brains develop between ages 3 and 6? |
| 9.4 | What are the main motor achievements of early childhood? |
| 9.5 | What are the nutritional needs of young children, and what risks are associated with undernutrition and obesity? What are the major health and safety risks for young children? |
