Unfortunately there is not enough time on an FIC course to spend much time on navigation yet it is by far the weakest skill on test. It seems instructors do not teach any method of navigation and the student believes that map reading is navigation. Mark a fix every 6 mins and put the elapsed time by it to the nearest 6 seconds, then use it to check track and ETA. Encourage students to put the map away between fixes and fly the aeroplane accurately.