Just come onto the site and seen this thread and thought I might be able to help (if it's not too late..?).
I too am a teacher thinking about doing some Antarctic project with my kids towards the end of the school year (ages away at the moment) and as such am gathering stuff in preparation for it.
Something I have is a booklet produced for (I think) last year's SATs (standard exams that kids have to do at various points throughout their school careers) which was all based on the Antarctic. It's really rather simple, but it's quite good.
Not sure where you could get copies of it either, but it was published by the Qualifications and Curriculum Authority (QCA) whose address is:
It's called "Antarctic Adventures" and has the codes "QCA/06/1709" and "271482" on the back. I think the first one is the most relevant.
Although I can't find much else about this on the internet, there is a link to a Newsround "Diary" from one of their presenters who spent a while in Antarctica which can be found at the following website:
Not sure how to hyperlink that - copy and paste will work just as well though.
Hope that's of some use or interest to someone.