Radio+show+performance+assessment

Let's think about:

How to divide up Radio Show topics. Should all kids do certain writing after each field trip, and then each kid will choose to revise / work on their writing about one particular thing for the radio show? How do we get all kids examining similar topics but about a different thing (ie. animals, tools, Lexington project, etc.)? What should they all do after each field trip: models? maps? stories? dialogues? letters? poems?