After lots of mails, I have decided that some review of the main facts was necessary.
I enclose here the document I sent to my colleagues. Click on summarizing to see it.
MORE WONDERFUL IDEAS FROM LAETITIA!! See what she has proposed to do in our eTwinning Forum. 
Suggesting topics
If we are to work with young students (aged 12) what do you think of making them do a power point showing how Christmas is celebrated in each region. Then if there are big differences they could discuss it in class.
Kids here love Christmas time!
I also thought of making them perform a short play based on stories for children (eg Three little pigs…). They would write the dialogues, make the masks (and costumes?). We could ask them to vote for their favourite one(s),except for their own, and reward the winners. This project could be the final one.
I still have a question though. Are we going to ask them to rate the topics so that they can eventually exclude one of them or add another?
THIS TEAM IS AMAZING!!! 