canada
hey, sally...i think most sixth grades don't study Canada--i can't remember at the moment what it is that they do... (i'm sure i'll hear if i'm wrong). here in the Boise School District we study w. hemisphere (latin america and canada)
after we get through mapping skills, culture, mexico, caribbean, central america, and south america....we get to "Cramada"--which usually involves a giant packet of pertinent questions that they work through in groups and then we have a big Canada Quiz Bowl.
i would recommend that whatever you, decide on what objectives (or find them in your curriculum guides or state standards, or wherever) and make sure your assignment covers those--rather than just, hey, kids write a report (focusing on what???), make a poster, or create a travel brochure--for example: they need to know climate, natural resources, industries...
my young sons came home from their school last year with the cutest thing--i saved and want to do...maybe with our south america unit--their sixth grade had made passports and stamps (yours could be stamps made from potatos in the shape of something indicative of that province) and then i think they learned something at each country's station.