“Play this interactive game–move the 15 red countries to their appropriate locations to turn the countries green. If you give up, you can double click on a red country to locate it (but it will turn blue).”
The old link to this map quiz no longer works but here is a new version. This online game where you return the “misplaced” country on the map is more than just and exercise in locating places (there are many online map quizzes for that sort of activity). What makes this one unique is that as you move the country further north or south the country expands or contracts according to how that country would be projected if that were its actual location on a Mercator map. This is a great way to introduce the importance of map projections.