Brita, from Born to Read, left a comment about resources for talking with children about hunger (check out her comment in the previous post). There are obviously several dimensions -- talking with kids who are hungry about their experience, problem solving hunger, and talking with kids who are NOT hungry about hunger as a personal and social problem. It is so hard to know what is developmentally appropriate - how to shelter kids from problems too big for them and at the same time empower them to be change agents from the start.
Heifer International offers Read To Feed for kids between the 3rd and 6th grades. They offer lesson plans for teachers, as well as online games and book ideas for kids. (Maine was a Read to Feed state in 2005- 2006 but does not appear to currently be involved.)
Feeding Minds, Fighting Hunger is another site dedicated to global hunger awareness. They provide lesson plans for all ages and a list of great looking links.
Kids Can Make a Difference has a list of "action ideas" for kids as well as more curricular resources.
The Hunger Task Force has an article about teaching hungry children about hunger, as well as links to many resources including a book list for children's books (and adult books and curricular resources) by 2nd Harvest