Challenge 2:
Image: www.espnet.eu/image/
E-Twinning: www.eTwinning.net
Tranning eTwinning: http://tranning.etwinning.net
British Council: www.britishcouncil.org/comenuis
Challenge 3:
University of Copenhagen provide a definition of culture shock here: http://studies.ku.dk/health_and_safety/culture_shock/.
Challenge 6:
On developing countries: http://en.wikipedia.org/wiki/Developing_country
On third world: http://en.wikipedia.org/wiki/Third_World
Challenge 7:
A multicultural school in London: http://www.teachers.tv/videos/ks1-ks2-english-the-multilingual-school