In this scenario, the student is a passive participant in the process. The information learned is impersonal. Clearly, the teacher is in control of the learning process; his or her interests dictate what and how fast the students learn.
The answer in all three cases is that rudder is used to help maintain stability in the roll. A little rudder at just the right time can help keep the nose up in a slow roll or even an aileron roll, as the plane rotates through the sideways portions of the roll when gravity is otherwise not countered.
rudder - a hinged vertical airfoil mounted at the tail of an aircraft and used to make horizontal course changes. spoiler - a hinged airfoil on the upper surface of an aircraft wing that is raised to reduce lift and increase drag. spoiler - an airfoil mounted on the rear of a car to reduce lift at high speeds. stabilizer - airfoil consisting of a device for stabilizing an aircraft. trailing edge - the rear edge of an airfoil.