I use this as part of a sub plan because it's something a non-French-speaking sub can give them and that is relatively easy for kids to do in French. If it was not used as a sub plan, I'd use it as an introduction BEFORE teaching the country names.
This is a partner activity in which students ask how to say various countries in French, and their partners have to say the country and spell it to them.
-the expression "Comment dit-on..."
-the expression "Quelle est l'orthographe?"
-country vocabulary in French
If you are teaching a geography unit, you may be interested in my bundle of Geography activities here: