We introduce Aileron Drag/Adverse Yaw in the Medium Turns briefing, then in the lesson get the student to look outside at the nose and see which way it yaws, then they look at the balance ball ("How much rudder we need and when?"). Before the student practises Medium Turns we get them to co-ordinate ail/rud by S-turns, turning around a point. Guess it's pretty standard everywhere else?