Sadly, navigation skills and map reading are slowly being lost. Geography teachers only have so much time in the good ones use it to teach about countries, physical environment, and hopefully spatial relationships. Many, even the good ones, lack the resources and skill to teach navigation.
Thankful there is a great online resource to teach navigation. The website Sailing Issues has an indepth, online class that goes into positioning, tides, nautical charts, and so much more. Even if one does not want to teach all of this there is more than enough to pick and choose from. So take a good look and imagine captaining your own HMS Geography!