Sorry, Praise, but NOT Wee Sing for 5th graders! They think they're much too cool.Sally, there's a lot of good stuff out there. Art Thieme has some wonderful material on his recordings, available at Folk Legacy Records- click above at either Links or Help Support the Mudcat and find him there.
There's another thread floating around about the Oregon Trail. I'll think some more on this tonight and get back to you tomorrow- I'm an elementary music teacher in summer mode, so my brain isn't working at the 5th grade level!