i must emphasise that these conclusions are quite tentative, because of the lack of data, hopefully as we carry on, and maybe get more schools involved, we'll get a bigger set of data, then we can actually do some statistical analysis, and, to be more certain of the results, but it shows general patterns that we'd expect, so it makes, it shows that it's quite easy for the schoolchildren, and it fits in very well with their geography courses, and the new g c s e curriculum.