[header] How to put a babysitting charge to sleep [title] Stop all active and outdoors activities an hour before bedtime. [step] This gives the child enough time to calm down. Plan for bedtime to be about 10 minutes earlier than the parents said. 
[title] Have the child do a few calming activities, such as reading (or if he/she can't read, you read to them) or listening to soft music. [step] Especially if the kid is three or younger, they will probably just crash once a calming activity is done.