1. When does birth length double?: Answer: By 4 years 2. When does the child sit unsupported?: Answer: 8 months 3. When does a child achieve 50% of adult height?: Answer: 2 years 4. When does a child throw a ball overhand?: Answer: 18 months 5. When does a child speak 2-3 word sentences?: Answer: 2 Yeears 6. Age groups concepts of bodily injury: Answer: Infants: After 6 months, their cognitive development allows them to remember pain. Toddlers: Fear intrusive procedures. Preschoolers: Fear body mutilation. School age: Fear loss of control of their body. Adolescent: Major concern is change in body image. 7. Following immunization, what teaching should the nurse provide to th