If you feel it appropriate...you might explain to the teenagers that UK life isn't perfect and some aspects of Ukrainian culture and society will be equal to or better than those in the UK.
Apologies if fixtures but...my wife (and my step son) took the Life in the UK Test some years ago, part of qualifying for British Citizenship. I believe we gave the detailed workbook away to a friend in the village.
Anyway, I've found something on line (subscription free) which is a summary...