Oh, now you've got me thinking. Here are some songs that are fun with that age group:
Green Grow the Rushes
The Rattlin' Bog
Old Joe Clark (with some editing needed to preserve a "G" rating)
Old Dan Tucker

Other songs I do that aren't so traditional or don't fit the criteria are Swallowed a Fly and There's a Hole in the Bottom of the Sea. The Hokey Pokey is also popular.
-Joe Offer-