Final answer:
To promote sleep in school-age children, it is recommended to encourage quiet activities prior to bedtime, as they help children relax and signal the body to prepare for sleep.
Step-by-step explanation:
A nursing measure to promote sleep in school-age children is to encourage quiet activities prior to bed. This helps the body unwind and signals the brain that it's time to prepare for sleep. Keeping a consistent sleep schedule, ensuring the environment is conducive to sleep, and avoiding stimulating activities before bedtime all contribute to better sleep hygiene.
Activities such as watching TV or engaging in vigorous exercise can be stimulating and might interfere with the body's ability to fall asleep. On the other hand, a dark and quiet room can also be beneficial but is not the primary measure suggested here for promoting sleep hygiene in children.