When children see things on the news or hear of tragedies, it can really affect them. That feeling can be overwhelming for them to try to deal with.
Several years ago, when Haiti was struck with profound tragedy, our children were very affected. So we invited members of the community to come and assemble hygiene kits with us, which we then donated to the Church of Jesus Christ of Latter-Day Saints, who were actively distributing aid on the ground in Haiti.
The activity was simple, but profound for our girls. They felt the joy of living outside of themselves and working to do something for others. But also important, they moved from a feeling of helplessness in the face of tragedy, to a feeling of empowerment.
Few things are more powerful in the mind of a child than the knowledge that they can do something.