Interesting little find, a Forestry commission produced resource for teachers! Great stuff.
http://scotland.forestry.gov.uk/images/corporate/pdf/recumbent-stone-circles-learning-resource.pdf
That is indeed an excellent thing. Lets hope one day they build a 'Prehistory Centre' as well and this time build it in the right place.
Really like this booklet, but what's the best book/gazetteer were one thinking of a week or 10 days visit?