Children need to know the basic facts and because they are still very young and self-centered, need to be assured that the crisis is not their fault. Awareness is the first step. Even fun things can be too much. Deal with their fears, and respect their ability to handle situations when they are prepared for what is going on. Make an effort to cut down on activities, when you see signs of stress in your child's behavior.
Quiet times restore a sense of balance for most everyone.
Teach your child tricks for calming down and relaxing, such as taking deep breaths, thinking of a quiet place, listening to calming music or reading a book. Bedtime rituals can be very calming. Include sharing something you liked about the child that day, or a good feeling you had during the day. Share some small thing to look forward to tomorrow. Children often pick up stress from their parents.