I've used the BBC series on Folk Dance- with John Kirkpatrick playing, for many years with lower and upper KS2 children and as long as they're not forced into boy/girl pairs they get on well and enjoy the experience. One of my recent pupils was so worn out he re-christened the activity as "cross-country dancing", which reminds me of those lovely Bill Tidy "Cloggies" cartoons". Good Luck anyway.